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{{Infobox Country or territory {{Short description|U.S. territory in the Pacific Ocean}}
{{About|the U.S. territory|the international organization|GUAM Organization for Democracy and Economic Development{{!}}GUAM}}
|native_name = Territory of Guam<br/>''Guåhan''
{{Use mdy dates|date=March 2024}}
|common_name = Guam
{{Infobox dependency
|image_flag = Flag of Guam.svg
|name= Guam
|image_coat = Coat of arms of Guam.svg
|native_name={{native name|ch|Guåhan}}
|image_map = LocationGuam.png
|settlement_type=]
|national_motto = "Where America's Day Begins"
|image_flag=Flag of Guam.svg
|national_anthem = '']''
|flag_size=130px
|official_languages = ], ]
|flag_link=Flag of Guam
|capital = ]
|image_seal=Seal of Guam.svg
|latd= |latm= |latNS= |longd= |longm= |longEW=
|seal_size=65px
|largest_settlement_type = village
|seal_type=Seal
|largest_settlement = ]
|seal_link=Seal of Guam
|government_type = Territory of the ]
|nickname={{native name|ch|"Tånó y Chamoru"|italics=off}} ({{Langx|en|"Land of the Chamorro"}})
|leader_title1 = ]
|nickname_link=List of U.S. state and territory nicknames
|leader_title2 = ]
|motto_link=List of U.S. state and territory mottos
|leader_name1 = ] (R)
|motto={{native name|ch|"Tånó I' Man Chamoru"|italics=off}}<br>({{Langx|en|"Land of the Chamorros"}})
|leader_name2 = ] (R)
|anthem_link=List of U.S. state songs
|area_rank = 192nd
|anthem="]" (regional)<br>{{center|]}}<br> "]" (official)<br>{{center|]}}
|area_magnitude = 1 E8
|image_map=Guam on the globe (Southeast Asia centered) (small islands magnified).svg
|area = 543.52
|map_alt=Location of Guam
|areami² = 209.85 <!--Do not remove per ]-->
|map_caption=Location of Guam (circled in red)
|percent_water = negligible
|mapsize=290px
|population_estimate = 170,000
|subdivision_type=]
|population_estimate_rank = 186th
|subdivision_name={{flag|United States}}{{efn|Despite being under the sovereignty of the United States since 1898, Guam has not been fully ] into the country for constitutional purposes.<ref>{{cite web |title=U.S. Territories - Developments in the Law|work= ] |date= April 10, 2017 |url= https://harvardlawreview.org/print/vol-130/us-territories-introduction/ |language=en |access-date=2024-06-11}}</ref> See the page for the ] for more information.}}
|population_estimate_year = July 2006
|established_title=Before annexation
|population_census =
|established_date=]
|population_census_year =
|established_title2=]
|population_density = 307
|established_date2= December 10, 1898
|population_densitymi² = 795 <!--Do not remove per ]-->
|official_languages={{hlist|]|]}}
|population_density_rank = 37th
|demonym=]
|GDP_PPP = $3.2 billion
|capital=]
|GDP_PPP_rank = 167th
|largest_city=]
|GDP_PPP_year = 2000
|ethnic_groups_ref=<ref name="CIA Factbook">{{cite web|title=Australia-Oceania :: Guam (Territory of the US)|url=https://www.cia.gov/the-world-factbook/countries/guam/|website=The World Factbook|publisher=Central Intelligence Agency|access-date=August 26, 2015|archive-date=January 26, 2021|archive-url=https://web.archive.org/web/20210126164717/https://www.cia.gov/the-world-factbook/countries/guam/|url-status=live}}</ref>
|GDP_PPP_per_capita = $21,000 (2000 est.)
|ethnic_groups={{Plainlist|
|GDP_PPP_per_capita_rank = 35th
* 49.3% ]
|sovereignty_type = ]
* 36.6% ]
|sovereignty_note = none&nbsp;<small>(territory of the ])</small>
* 9.4% ]
|HDI =
* 7.1% ]
|HDI_rank =
* 0.6% ]}}
|HDI_year =
|ethnic_groups_year=2010
|HDI_category =
|government_type=] presidential ] within a ]
|currency = ]
| leader_title1 = ]
|currency_code = USD
| leader_name1 = ] (])
|country_code = 1
|leader_title2 = ]
|time_zone = ]
|leader_name2={{nowrap|] (])}}
|utc_offset = +10
|leader_title3=]
|time_zone_DST = (no DST)
|leader_name3={{nowrap|] (D)}}
|utc_offset_DST =
|legislature=]
|cctld = ]
| national_representation = ]
|calling_code = 1-671
| national_representation_type1 = ]
|footnotes =
| national_representation1 = ] (])
|religion_year=2010
|religion_ref=<ref name="Religion">{{Cite web|url=http://www.globalreligiousfutures.org/countries/guam#/?affiliations_religion_id=0&affiliations_year=2010|title=Guam|access-date=September 12, 2017|archive-url=https://web.archive.org/web/20170912191843/http://www.globalreligiousfutures.org/countries/guam#/?affiliations_religion_id=0&affiliations_year=2010|archive-date=September 12, 2017|url-status=dead}}</ref>
|religion={{Plainlist|
* 94.1% ]
* 1.7% ]
* 1.5% Folk religions
* 1.1% ]
* 1.6% ]}}
|area_sq_mi=210 <!-- Do not remove as per WP:MOSNUM -->
|elevation_max_m=407
|elevation_max_ft=1,334
|unit_pref=Imperial
|population_estimate=168,801<ref name="CIA Factbook"/>
|population_estimate_year= 2021
|population_estimate_rank= 177th
|population_density_km2=299
|population_density_sq_mi=775 <!-- Do not remove as per WP:MOSNUM -->
|GDP_PPP=$5.8 billion<ref name="CIA Factbook"/>
|GDP_PPP_year=2016
|GDP_PPP_per_capita=$35,600<ref name="CIA Factbook"/>
|GDP_nominal=$6.3 billion<ref>{{Cite web|title=Guam {{!}} Data|url=https://data.worldbank.org/country/GU|access-date=August 9, 2021|website=data.worldbank.org|archive-date=August 9, 2021|archive-url=https://web.archive.org/web/20210809093906/https://data.worldbank.org/country/GU|url-status=live}}</ref>
|GDP_nominal_year=2019
|GDP_nominal_per_capita=$37,387
|Gini_change=<!-- increase/decrease/steady -->
|HDI=0.901 <!-- number only -->
|HDI_year=2017<!-- Please use the year to which the data refers, not the publication year-->
|HDI_change=increase <!-- increase/decrease/steady -->
|currency=] (US$)
|currency_code=USD
|timezone=]
|utc_offset=+10:00
|date_format=mm/dd/yyyy
|drives_on=right
|calling_code=]-]
|postal_code_type={{nowrap|]}}
|postal_code=GU
|iso_code={{hlist|]|]}}
|cctld=]
}} }}
'''Guam''' ({{IPAc-en|audio=en-us-Guam.ogg|ˈ|ɡ|w|ɑː|m}} {{respell|GWAHM}}; {{langx|ch|Guåhan}} {{IPA|ch|ˈɡʷɑhɑn|}}) is an ] in the ] subregion of the western ].<ref name="oia">{{cite web|title=U.S. Territories|url=http://www.doi.gov/oia/Firstpginfo/territories.html|publisher=DOI Office of Insular Affairs|access-date=February 9, 2007|archive-url=https://web.archive.org/web/20070209094507/http://www.doi.gov/oia/Firstpginfo/territories.html|archive-date=February 9, 2007}}</ref><ref>{{cite web|title=Definitions of Insular Area Political Organizations.|url=http://www.doi.gov/oia/Islandpages/political_types.htm|url-status=dead|archive-url=https://web.archive.org/web/20110721034923/http://www.doi.gov/oia/Islandpages/political_types.htm|archive-date=July 21, 2011|access-date=November 14, 2007|website=U.S. Department of the Interior}} '']''. Retrieved October 31, 2008.</ref> Guam's capital is ], and the most populous village is ]. It is the ] and territory of the United States, reckoned from the ] In ], Guam is the largest and southernmost of the ] and the largest island in ]. As of 2022, its population was 168,801. Chamorros are its largest ethnic group, but a minority on the multiethnic island. The territory spans {{convert|210|mi2|km2 acre}} and has a population density of {{convert|775|/mi2}}.
'''Guam''' (]: ''Guåhan''), officially the '''U.S. Territory of Guam''', is an island in the Western ] and is an ] ] of the ]. The ], Guam's indigenous inhabitants first populated the island approximately 6,000 years ago. It is the largest and southernmost of the ]. The island's capital is ], formerly Agana. Guam's economy is mainly supported by ] (particularly from ], ] and ]) and ] bases. The ] includes Guam on the ].


Indigenous Guamanians are the ], who are related to the ] peoples of the ], the ], ], and ]. But unlike most of its neighbors, the ] is not classified as a ] or ] language. Rather, like ], it possibly constitutes an independent branch of the ].<ref name="Blust 2000 83–122">{{cite journal |last=Blust |first=Robert |year=2000 |title=Chamorro Historical Phonology |journal=Oceanic Linguistics |volume=39 |issue=1 |pages=83–122 |doi=10.1353/ol.2000.0002|s2cid=170236058 |issn=0029-8115}}</ref><ref name="Smith 2017 435–490">{{cite journal |last=Smith |first=Alexander D. |year=2017 |title=The Western Malayo-Polynesian Problem |journal=Oceanic Linguistics |volume=56 |issue=2 |pages=435–490 |doi=10.1353/ol.2017.0021|s2cid=149377092 }}</ref> The Chamorro people settled Guam and the Mariana islands approximately 3,500 years ago. Portuguese explorer ], while in the service of Spain, was the first European to visit and claim the island on March 6, 1521. Guam was fully colonized by ] in 1668. Between the 16th and 18th centuries, Guam was an important stopover for Spanish ]. During the ], the United States ] on June 21, 1898. Under the 1898 ], Spain ceded Guam to the U.S. effective April 11, 1899.
==Geography==
Guam is located at 13.5°N 144.5°E and has an area of 210 ]s (544 ]). It is the southernmost island in the Mariana island chain and is the largest island in ]. This island chain was created by the colliding Pacific and Philippine tectonic plates. The ], a deep ], lies beside the island chain to the east. The ], the deepest point on ], is southwest of Guam at 35,797&nbsp;] (10,911&nbsp;]) deep. The island experiences occasional ]s due to being on the edge of the ]. In recent years, quakes with epicenters near Guam have had magnitudes ranging from 5.0 to 8.2. Unlike the ] ] in the northern Marianas, Guam is not volcanically active. However, due to wind direction and proximity, volcanic ash activity does occasionally affect Guam.


Before ], Guam was one of five American jurisdictions in the Pacific Ocean, along with ] in Micronesia, ] and ] in Polynesia, and the Philippines. On December 8, 1941, hours after the ], ] by the ], who ] before ] on July 21, 1944, which is commemorated there as ].<ref>{{cite news|agency=Associated Press|title=Guam police arrest suspect in memorial theft|work=]|date=July 7, 2007|url=http://www.marinecorpstimes.com/news/2007/07/ap_guammemorialtheft_070707/|access-date=April 5, 2010|url-status=dead|archive-url=https://web.archive.org/web/20110515072107/http://www.marinecorpstimes.com/news/2007/07/ap_guammemorialtheft_070707/|archive-date=May 15, 2011}}</ref> Since the 1960s, ] has been supported primarily by tourism and the ], for which Guam is a major strategic asset.<ref name="Rogers2">{{cite book|last=Rogers|first=Robert F.|title=Destiny's Landfall: A History of Guam|publisher=University of Hawaii Press|year=1995|isbn=978-0-8248-1678-0|location=Honolulu}}</ref> Its ] has been a matter of significant discussion, with public opinion polls indicating a strong preference for ].<ref name="KUAM-2016">{{Cite web |last=Staff |date=April 2016 |title=UOG poll: Guamanians prefer statehood |url=http://www.kuam.com/story/31747261/2016/04/Sunday/uog-poll-guamanians-prefer-statehood |access-date=December 12, 2023 |website=] |language=en}}</ref><ref name="Freymann-2020">{{Cite web |last=Freymann |first=Eyck |date=October 14, 2020 |title=Counter China by Making Guam a State |url=https://foreignpolicy.com/2020/10/14/counter-china-by-making-guam-a-state/ |access-date=December 12, 2023 |website=Foreign Policy |language=en-US}}</ref>
The northern part of the island is a forested coralline limestone plateau while the south contains volcanic peaks covered in forest and grassland. A coral reef surrounds most of the island, except in areas where bays exist that provide access to small rivers and streams that run down from the hills into the Pacific Ocean and Philippine Sea. The island's population is most dense in the northern and central regions.


Guam's '']'' motto is "Where America's Day Begins", which refers to the island's proximity to the ].<ref>{{cite book|author-last=Mack|author-first=Doug|year=2017|title=The Not-Quite States of America: Dispatches From the Territories and Other Far-Flung Outposts of the USA|publisher=W.W. Norton|page=114|isbn=9780393247602}}</ref><ref>{{cite book|author-last=Grabowski|author-first=John F.|year=1992|title=U.S. Territories and Possessions (State Report Series)|publisher=Chelsea House|page=|isbn=9780791010532|url-access=registration|url=https://archive.org/details/usterritoriespos00grab/page/39}}</ref> Guam is among the 17 ], and has been a member of the ] since 1983.<ref>{{Cite web|title=Non-Self-Governing Territories – Official U.N. Website|url=https://www.un.org/en/decolonization/nonselfgovterritories.shtml|url-status=dead|archive-url=https://web.archive.org/web/20140227010648/http://www.un.org/en/decolonization/nonselfgovterritories.shtml|archive-date=February 27, 2014|access-date=November 18, 2019}}</ref>
] ] ]


Guam is called {{lang|ch|Guåhan}} by Chamorro speakers, from the word {{lang|ch|guaha}}, meaning 'to have'; its English gloss 'we have' references the island's providing everything needed to live.<ref name="pdn">{{Cite news |last=Tamondong |first=Dionesis |date=16 February 2010 |title=Camacho: Name Change Will Affirm Identity |work=] |url=http://www.guampdn.com/article/20100216/NEWS01/2160308/1002/Camacho-Name-change-will-affirm-identity |access-date=2010-02-18}} {{Dead link |date=September 2010 |bot=H3llBot}}</ref><ref>{{Cite book |last=Saco |first=José Antonio |url=https://books.google.com/books?id=mK3UAAAAMAAJ&q=%2522Guaj%25C3%25A1n%2522&pg=PA110 |title=Colección de papeles científicos, históricos, políticos y de otros ramos sobre la isla de Cuba |date=1859 |publisher=d'Aubusson y Kugelmann |volume=3 |location=Paris |language=es |trans-title=Collection of scientific, historical, political and other papers on the island of Cuba |access-date=16 October 2020 |archive-date=13 November 2020 |archive-url=https://web.archive.org/web/20201113192120/https://books.google.com/books?id=mK3UAAAAMAAJ&q=%2522Guaj%25C3%25A1n%2522&pg=PA110 |url-status=live }}</ref>
*Satellite images of southern and northern Guam.


==Climate== == History ==
{{main|History of Guam}}
The climate is characterized as tropical marine. The weather is generally warm and humid with little seasonal temperature variation. The mean high temperature is 86°] (30&nbsp;°]) and mean low is 74°] (24&nbsp;°]) with an average annual rainfall of 96 ]es (2,180&nbsp;]). The dry season runs from December through June. The remaining months constitute the rainy season. The highest risk of typhoons is during October and November.


=== Pre-Contact era ===
An average of three tropical storms and one typhoon pass within 180 nautical miles <!--nautical or statute? Erring on the side of caution and guessing nautical:-->(330&nbsp;km) of Guam each year. The most intense typhoon to pass over Guam recently was ], with sustained winds of 180 miles per hour, which slammed Guam on December 8, 2002, leaving massive destruction.
{{Main|Mariana Islands#Prehistory}}
After ] in ] wooden structures began to be replaced by concrete. (See ], ) By the ] many homes were made of concrete and "typhoon proof". Since the ] wooden utility poles have been slowly replaced by typhoon-resistant concrete and steel poles. In the ] many home and business owners installed ].
] ] into the islands of the ]|368x368px]]
Guam, along with the other ], were the first islands settled by humans in ]. It was also the first and the longest of the ocean-crossing voyages of the ], and is separate from the later ] settlement of the rest of Remote Oceania. They were first settled around 1500 to 1400 BC, by migrants departing from the ] which was followed by a second migration from the ] in the first millennium AD. A third migration wave took place from ], likely the Philippines or eastern ], by 900 AD.<ref name="Hung">{{cite journal |last1=Hung |first1=Hsiao-chun |last2=Carson |first2=Mike T. |last3=Bellwood |first3=Peter |last4=Campos |first4=Fredeliza Z. |last5=Piper |first5=Philip J. |last6=Dizon |first6=Eusebio |last7=Bolunia |first7=Mary Jane Louise A. |last8=Oxenham |first8=Marc |last9=Chi |first9=Zhang |title=The first settlement of Remote Oceania: the Philippines to the Marianas |journal=Antiquity |date=2015 |volume=85 |issue=329 |pages=909–926 |doi=10.1017/S0003598X00068393|doi-access=free }}</ref><ref name="Zotomayor">{{cite journal |last1=Zotomayor |first1=Alexie Villegas |title=Archaeologists say migration to Marianas longest ocean-crossing in human history |journal=Marianas Variety News and Views |date=March 12, 2013 |page=2 |url=https://issuu.com/aleksea/docs/mv_3-12-13/2 |access-date=October 25, 2020 |archive-date=October 21, 2022 |archive-url=https://web.archive.org/web/20221021085833/https://issuu.com/aleksea/docs/mv_3-12-13/2 |url-status=live }}</ref>


These original settlers of Guam and the ] evolved into the ], historically known as Chamorros after first contact with the Spaniards.<ref name="Carano">{{cite book|last1=Carano|first1=Paul|last2=Sanchez|first2=Pedro C.|year=1964|title=A Complete History of Guam|location=Tokyo|publisher=Charles E. Tuttle Company|oclc=414965}}</ref>{{rp|16}} The ancient Chamorro society had four classes: {{transliteration|ch|chamorri}} (chiefs), {{transliteration|ch|matua}} (upper class), {{transliteration|ch|achaot}} (middle class), and {{transliteration|ch|mana'chang}} (lower class).<ref name="Carano" />{{rp|20–21}} The {{transliteration|ch|matua}} were located in the coastal villages, which meant they had the best access to fishing grounds. The {{transliteration|ch|mana'chang}} were located in the island's interior. {{transliteration|ch|Matua}} and {{transliteration|ch|mana'chang}} rarely communicated with each other. The {{transliteration|ch|matua}} often used {{transliteration|ch|achaot}} as intermediaries.<ref name="Carano" />{{rp|21}}
==History==

{{main|History of Guam}}
There were also "{{transliteration|ch|makåhna}}" or "{{transliteration|ch|kakahna}}", shamans with magical powers and "'{{transliteration|ch|]}}" or "{{transliteration|ch|suruhåna}}", healers who used different kinds of plants and natural materials to make medicine. Belief in spirits of ancient Chamorros called "{{transliteration|ch|]}}" still persists as a remnant of pre-European culture. It is believed that "{{transliteration|ch|suruhånu}}" or "{{transliteration|ch|suruhåna}}" are the only ones who can safely harvest plants and other natural materials from their homes or "{{transliteration|ch|hålomtåno}}" without incurring the wrath of the "{{transliteration|ch|]}}." Their society was organized along ] clans.<ref name="Carano" />{{rp|21}}
] navigator ], sailing for the King of ], reached the island in ] during his circumnavigation of the globe. General ] claimed Guam for Spain in ]. Spanish colonization commenced in ] with the arrival of Padre ], who established the first Catholic mission. The islands were then governed as part of the ] from the ]. Between 1668 and ], Guam was an important resting stop on the Spanish trade route between ] and the Philippines. Guam, along with the rest of the Mariana and ], was treated by Spain as part of their colony in the Philippines. While Guam's Chamorro culture is unique, the cultures of both Guam and the Northern Marianas were heavily influenced by Spanish culture and traditions. Also, many native men of Guam were "eliminated" by the Spanish during their occupation,and the Spainish men then married the native women.

The Chamorro people raised colonnades of megalithic capped pillars called {{transliteration|ch|]s}} upon which they built their homes. Latte stones are stone pillars that are found only in the Mariana Islands. They are a recent development in Pre-Contact Chamorro society. The latte-stone was used as a foundation on which thatched huts were built.<ref name="Carano" />{{rp|26}} Latte stones consist of a base shaped from limestone called the {{transliteration|ch|haligi}} and with a capstone, or {{transliteration|ch|tåsa}}, made either from a large brain coral or limestone, placed on top.<ref name="Carano" />{{rp|27–28}} A possible source for these stones, the ], was discovered in 1925 on ].<ref name="Carano" />{{rp|28}}

=== Spanish era ===
{{further|Spanish–Chamorro Wars}}
] by the ] in the ], {{circa|1590}} ]]]
The first European to travel to Guam was Portuguese navigator ], sailing for the ], when he sighted the island on March 6, 1521, during his fleet's circumnavigation of the globe.<ref name=Carano />{{rp|41–42}} Despite Magellan's visit, Guam was not officially claimed by Spain until January 26, 1565, by ].<ref name="Carano" />{{rp|46}} From 1565 to 1815, Guam and the Northern Mariana Islands, the only Spanish outposts in the Pacific Ocean east of the Philippines, were reprovisioning stops for the ], a fleet that covered the Pacific trade route between ] and ].<ref name="Carano" />{{rp|51}}

Spanish colonization commenced on June 15, 1668, with the arrival of a mission led by ], who established the first Catholic church.<ref name="Carano" />{{rp|64}} The islands were part of the ], and part of the ], based in ].<ref name="Carano" />{{rp|68}} The ] on Guam began in 1670 over growing tensions with the ] mission, with the last large-scale uprising in 1683.<ref name="Carano" />{{rp|86}}

Intermittent warfare, plus the typhoons of 1671 and 1693, and in particular the ] epidemic of 1688, reduced the Chamorro population from 50,000 to 10,000, and finally to less than 5,000.<ref name="Carano" />{{rp|86}} Up until the late 19th century, Guam was encountered by adventurers and pirates, including ], ], ], ], ], ], ] and ].

The island became a rest stop for ] starting in 1823.<ref name=Carano />{{rp|145}} A devastating typhoon struck the island on August 10, 1848, followed by a severe earthquake on January 25, 1849, which resulted in many refugees from the ], victims of a resultant ].<ref name=Carano />{{rp|151}} This earthquake was much more powerful than the 8.2 one that occurred on August 8, 1993.<ref>{{Cite book |last1=Driver |first1=Marjorie |title=Carolinians in the Mariana Islands in the 1800s: selected documents from the holdings of the Spanish Documents Collection at the Micronesian Area Research Center: English-Spanish Edition (English-Spanish ed.) |last2=Brunal-Perry |first2=Omaira |date=November 19, 1996 |isbn=1878453211 |pages=12|publisher=Division of Historic Preservation, Department of Community and Cultural Affairs, Commonwealth of the Northern Mariana Islands }}</ref> After ] killed 3,644 Guamanians in 1856, Carolinians and Japanese were permitted to settle in the Marianas.<ref name=Carano />{{rp|157}}

=== American era ===
{{expand section|with=info re the period between the December 10, 1898, cession to the U.S. and WW-I. See e.g., https://www.google.com/books/edition/Destiny_s_Landfall/eh_HDwAAQBAJ?hl=en&gbpv=1&pg=PA102 and elsewhere for info.|date=May 2023}}
{{further|Capture of Guam}}
] {{circa|1899}}–1900]]
After almost four centuries as part of the ], the United States ] the island following Spain's defeat in the 1898 ], as part of the ]. Guam was transferred to the ] control on December 23, 1898, by ] from 25th President ].

Guam was a station for American merchants and warships traveling to and from the ], which was another American acquisition from Spain, while the ] were sold by Spain to Germany for part of its rapidly expanding ]. A U.S. Navy yard was established at ] in 1899. A ] barracks was established at ] in 1901.<ref name=Rottman>Rottman, G. (2004) ''Guam 1941 & 1944: Loss and Reconquest''. Oxford: Osprey Publishing, {{ISBN|978-1-84176-811-3}}</ref>{{rp|13}}

A marine seaplane unit was stationed in Sumay from 1921 to 1930, the first in the Pacific.<ref name=Rottman />{{rp|13}} The ] built ] in 1903 for the first trans-Pacific communications cable, followed by ] establishing a seaplane base at Sumay for its trans-Pacific '']'' route.<ref name=Rottman />{{rp|15}}

==== World War I ====
On December 10, 1914, the ], a German armed ], was forced to seek port at ] on the U.S. territory of Guam after running short on coal. The United States, which was neutral at the time refused to supply provisions sufficient for the ''Cormoran'' to make a German port so the ship and her crew were interned until 1917.

On the morning of April 7, 1917, word reached Guam by telegraph cable that the ]. The Naval ], ], sent two officers to inform the ''Cormoran'' that a state of war existed between the two countries, that the crew were now ], and that the ship must be surrendered. Meanwhile, the ] blocked the entrance to Apra Harbor to prevent any attempt to flee. In a separate boat, the two officers were accompanied by a barge commanded by Lt. W.A. Hall, who was designated prize master, and had brought 18 sailors and 15 Marines from the barracks at ].<ref name="sextant">{{cite web |last1=Conrad |first1=Dennis |date=March 28, 2017 |title=The War Begins: The United States Navy and the German Cruiser Cormoran |url=https://usnhistory.navylive.dodlive.mil/2017/03/28/the-war-begins-the-united-states-navy-and-the-german-cruiser-cormoran/ |url-status=dead |archive-url=https://web.archive.org/web/20210319064717/https://usnhistory.navylive.dodlive.mil/2017/03/28/the-war-begins-the-united-states-navy-and-the-german-cruiser-cormoran/ |archive-date=March 19, 2021 |access-date=March 6, 2021 |website=The Sextant |publisher=Histories and Archives Division, Naval History and Heritage Command}}</ref><ref name="Hoppe">{{cite web |last1=Hoppe |first1=Jon |date=October 1, 2015 |title=The Destruction of the S.M.S. Cormoran and the First U.S. Shot Fired in World War I |url=https://www.navalhistory.org/2015/10/01/the-destruction-of-the-s-m-s-cormoran |access-date=March 6, 2021 |website=Naval History Blog |publisher=U.S. Naval Institute |archive-date=September 30, 2020 |archive-url=https://web.archive.org/web/20200930030833/https://www.navalhistory.org/2015/10/01/the-destruction-of-the-s-m-s-cormoran |url-status=live }}</ref>

Seeing a launch from ''Cormoran'' hauling a barge of supplies back shore, Hall ordered shots fired across the bow of the launch until it hove to. Meanwhile, the two officers reached ''Cormoran'' and informed Captain ] of the situation. Zuckschwerdt agreed to surrender his crew but refused to turn over the ship. The U.S. officers informed Zuckschwerdt that the ''Cormoran'' would be treated as an enemy combatant and left to inform Governor Smith of the situation. Unbeknownst to the Americans, the Germans had secreted an explosive device in the ship's coal bunker. Minutes after the Americans left, an explosion aboard ''Cormoran'' hurled debris across the harbor and her crew began abandoning ship. The two American boats and USS ''Supply'' immediately began to recover German sailors from the water, saving all but seven of the roughly 370 ''Cormoran'' crew. This incident, including the warning shots against the launch, accounted for the first violent action of the ], first shots fired by the U.S. against Germany in World War I, the first German prisoners of war captured by the U.S., and the first Germans killed in action by the U.S. in World War I.<ref name="Rogers1995">{{cite book |author=Robert F. Rogers |url=https://books.google.com/books?id=AEn9J3tXFS8C&pg=PA139 |title=Destiny's Landfall: A History of Guam |date=January 1995 |publisher=University of Hawaii Press |isbn=978-0-8248-1678-0 |pages=139–}}</ref><ref>{{cite web |last1=Johnson |first1=Tyler |date=October 17, 2020 |title=A Rock Springs man fired the first American shot of World War I |url=https://wyo4news.com/news/a-rock-springs-man-fired-the-first-american-shot-of-world-war-i/ |access-date=March 6, 2021 |website=Wyo4News |archive-date=April 6, 2023 |archive-url=https://web.archive.org/web/20230406004056/https://wyo4news.com/news/a-rock-springs-man-fired-the-first-american-shot-of-world-war-i/ |url-status=live }}</ref>

==== World War II ====
] walk through the ruins of Hagåtña, July 1944.]]
During ], the ] attacked and invaded in the ] on December 8, at the same time as the ]. The Japanese renamed Guam {{lang|ja-Latn|Ōmiya-jima}} (Great Shrine Island). The ] lasted about 31 months. During this period, the indigenous people of Guam were subjected to beatings, forced labor, family separation, concentration camps, massacres, beheadings and rape.<ref> {{webarchive|url=https://web.archive.org/web/20100406001230/http://catalogue.nla.gov.au/Record/197751|date=April 6, 2010}}. Catalogue.nla.gov.au (September 20, 1994). Retrieved June 13, 2012.</ref><ref>" {{webarchive|url=https://web.archive.org/web/20130120023031/http://www.doi.gov/oia/press/2004/72104guam_war_claims.cfm|date=January 20, 2013}}." '']''. Retrieved September 19, 2012.</ref><ref>{{cite journal|last=Higuchi|first=Wakako|title=The Japanisation Policy for the Chamorros of Guam, 1941–1944|journal=The Journal of Pacific History|year=2001|url=http://www.hawaii.edu/hivandaids/The_Japanisation_Policy_for_the_Chamorros_of_Guam,_1941-1944.pdf|doi=10.1080/00223340120049424|volume=36|issue=1|pages=19–35|url-status=dead|archive-url=https://web.archive.org/web/20130120021514/http://www.hawaii.edu/hivandaids/The_Japanisation_Policy_for_the_Chamorros_of_Guam%2C_1941-1944.pdf|archive-date=January 20, 2013}}</ref><ref name="books.google.com">Werner Gruhl, '' {{webarchive|url=https://web.archive.org/web/20160101014017/https://books.google.com/books?id=ow5Wlmu9MPQC&pg=PA102|date=January 1, 2016}}'', Transaction Publishers, 2007 {{ISBN|978-0-7658-0352-8}}</ref>

During the nearly three years of occupation approximately 1,100 Chamorros were killed, according to later US ] committee testimony in 2004. Some historians estimate that war violence killed 10% of Guam's then 20,000 population.<ref name="books.google.com"/> The ] returned and fought the ] from July 21 to August 10, to recapture the island. July 21 is now a territorial holiday, ].

==== Post-war ====
After World War II, the ] established Guam as an ], provided for the structure of the island's civilian government, and granted the people U.S. citizenship. The Governor of Guam was federally appointed until 1968 when the ] provided for the office's popular election.<ref>{{cite book|first=Robert F.|last=Rogers|title=Destiny's Landfall: A History of Guam|year=1995|place=Honolulu|publisher=University of Hawaii Press}}</ref>{{rp|242}} Since Guam is not a U.S. state, U.S. citizens residing on Guam are not allowed to vote for president and their congressional representative is a non-voting member.<ref name=" Rogers2"/>

They do, however, vote for party delegates in presidential primaries.<ref name="Curry">{{cite news|url=https://www.nbcnews.com/id/wbna24839059|publisher=]|title=Nominating, but not voting for president: Clinton-Obama struggle spotlights Guam, American Samoa, Puerto Rico|first1=Tom|last1=Curry|date=May 28, 2008|access-date=August 19, 2016|url-status=live|archive-url=https://web.archive.org/web/20160815080233/http://www.nbcnews.com/id/24839059/ns/politics-decision_08/t/nominating-not-voting-president|archive-date=August 15, 2016}}</ref> In 1969, ] was held and rejected.<ref> {{Webarchive|url=https://web.archive.org/web/20210415165235/https://sudd.ch/event.php?lang=en&id=mp011969 |date=April 15, 2021 }} Direct Democracy {{in lang|de}}</ref> During the 1970s, ] started an engineering program, expanded ], and founded ].<ref name=Rottman />{{rp|17}} In the same period, ], Australian adventurer and filmmaker of '']'' visited Guam during his six-year escapade on the leg of his voyage through the Pacific aboard the ''Klaraborg''.

The removal of Guam's security clearance by President John F. Kennedy in 1963 allowed for the development of a ] industry. When the United States closed ] and ] bases in the ] after the expiration of their leases in the early 1990s, many of the forces stationed there were relocated to Guam.{{citation needed|date=July 2021}}

The ], which hit Japan particularly hard, severely affected Guam's tourism industry. Military cutbacks in the 1990s also disrupted the island's economy. Economic recovery was further hampered by devastation from super typhoons ] in 1997 and ] in 2002, as well as the effects of the ] and the crash of ] on tourism.<ref>{{Cite book |last=Tourism |first=United States Congress Senate Committee on Commerce, Science, and Transportation Subcommittee on Consumer Affairs, Foreign Commerce, and |url=https://books.google.com/books?id=wflkLlQ3r1QC&dq=guam++effects+of+the+September+11+terrorist+attacks+on+tourism&pg=PA71 |title=Terrorism's Effect on U.S. Tourism: Hearing Before the Subcommittee on Consumer Affairs, Foreign Commerce, and Tourism of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Seventh Congress, First Session, October 12, 2001 |date=2004 |publisher=U.S. Government Printing Office |isbn=978-0-16-071313-2 |language=en |access-date=December 17, 2022 |archive-date=April 6, 2023 |archive-url=https://web.archive.org/web/20230406194352/https://books.google.com/books?id=wflkLlQ3r1QC&dq=guam++effects+of+the+September+11+terrorist+attacks+on+tourism&pg=PA71 |url-status=live }}</ref>

== Geography and environment ==
{{Main|Geography of Guam}}
{{see also|Geology of Guam}}
]'s now decommissioned ], '']'' (EO-1), December 2011]]

Guam is {{convert|30.17|mi|km|2|sigfig=4|abbr=off|sp=us}} long and {{convert|4|to|12|mi|km|0|abbr=off|sp=us}} wide. It has an area of {{convert|212|sqmi|km2|0|abbr=off|sp=us}}. It is the ]. It is the southernmost and largest island in the ], as well as the largest in ].<ref>{{Cite web|title=Education Resources: Regional Information, Guam{{!}} PacIOOS|url=https://www.pacioos.hawaii.edu/education/region-guam/|access-date=March 16, 2021|website=Pacific Islands Ocean Observing System (PacIOOS)|language=en-US|archive-date=March 1, 2021|archive-url=https://web.archive.org/web/20210301223100/http://www.pacioos.hawaii.edu/education/region-guam/|url-status=live}}</ref> Guam's ] is the ], as measured from the ].<ref>{{cite web |title=The Most Extreme Points of the United States |url=https://www.worldatlas.com/articles/the-most-extreme-points-of-the-united-states.html |website=WorldAtlas |access-date=March 13, 2021 |date=May 28, 2018 |archive-date=February 25, 2021 |archive-url=https://web.archive.org/web/20210225054940/https://www.worldatlas.com/articles/the-most-extreme-points-of-the-united-states.html |url-status=live }}</ref><ref>{{cite web |title=Congressional Record - Proceedings and Debates of the 106th Congress, First Session - House of Representatives (Vol. 145, No. 34) |url=https://www.govinfo.gov/content/pkg/CREC-1999-03-04/pdf/CREC-1999-03-04-house.pdf |archive-url=https://web.archive.org/web/20210508113549/https://www.govinfo.gov/content/pkg/CREC-1999-03-04/pdf/CREC-1999-03-04-house.pdf |archive-date=May 8, 2021 |url-status=live |website=govinfo.gov |access-date=March 13, 2021 |page=H982 |date=March 4, 1999}}</ref>

The Mariana chain, of which Guam is a part, was created by collision of the Pacific and Philippine Sea ]s. Guam is located on the micro ] between the two. Guam is the closest land mass to the ], the deep ] that runs east of the Marianas. Volcanic eruptions established ] in the ], roughly 56 to 33.9 million years ago. The north of Guam is a result of this base being covered with layers of ], turning into ], and then being thrust upward by ] activity to create a plateau.<ref name="Guam"/>

The rugged south of the island is a result of more recent volcanic activity. ] off the southern tip of Guam is the largest of the many small ]s along the coastline. Guam's highest point is ] at {{convert|1334|ft|m|0|abbr=off|sp=us}} above sea level.<ref name="Guam">"Geography of Guam". ''Official site of Guam'', April 19, 2014. Retrieved April 19, 2014, from {{cite web|url=http://ns.gov.gu/geography.html|title=Guam's Geography|access-date=May 2, 2016|url-status=dead|archive-url=https://web.archive.org/web/19961027163532/http://ns.gov.gu/geography.html|archive-date=October 27, 1996}}.</ref> If its base is considered to be the nearby ], the deepest surveyed point in the ], Mount Lamlam is the ] at {{convert|37820|feet|m}}.<ref>{{cite web |last1=McMahon |first1=Mary |title=How do Scientists Determine the World's Tallest Mountain? |url=https://www.infobloom.com/how-do-scientists-determine-the-worlds-tallest-mountain.htm |website=Info Bloom |access-date=March 13, 2021 |date=January 23, 2021 |archive-date=May 20, 2021 |archive-url=https://web.archive.org/web/20210520184712/https://www.infobloom.com/how-do-scientists-determine-the-worlds-tallest-mountain.htm |url-status=live }}</ref><ref>{{cite web |last1=Fichtl |first1=Marcus |title=Guam's Mount Lamlam technically world's tallest mountain, though most of it is underwater |url=https://www.stripes.com/lifestyle/guam-s-mount-lamlam-technically-world-s-tallest-mountain-though-most-of-it-is-underwater-1.485437 |website=Stars and Stripes |access-date=March 13, 2021 |date=August 31, 2017 |archive-date=November 18, 2020 |archive-url=https://web.archive.org/web/20201118105200/https://www.stripes.com/lifestyle/guam-s-mount-lamlam-technically-world-s-tallest-mountain-though-most-of-it-is-underwater-1.485437 |url-status=live }}</ref>

Politically, Guam is divided into ]. The majority of the population lives on the coralline limestone plateaus of the north, with political and economic activity centered in the central and northern regions. The rugged geography of the south largely limits settlement to rural coastal areas. The western coast is ] of the ] and is the location of ], the capital ], and the tourist center of ]. The ] owns about 29% of the island,<ref name="VOA_20170809">{{cite web |title=Guam: Small But Important Piece of US Territory in Pacific {{!}} Voice of America - English |url=https://www.voanews.com/east-asia-pacific/guam-small-important-piece-us-territory-pacific |website=VOA News |access-date=March 14, 2021 |language=en |date=August 9, 2017 |archive-date=March 10, 2021 |archive-url=https://web.archive.org/web/20210310070638/https://www.voanews.com/east-asia-pacific/guam-small-important-piece-us-territory-pacific |url-status=live }}</ref> under the management of ].

===Climate===
{{further|Climate change in Guam|List of typhoons in Guam}}
] beach at ]]]
Guam has a ] on the ] (Köppen ''Af''). Its driest month of March almost qualifies as a ] (Köppen ''Am''). The weather is generally hot and humid throughout the year with little seasonal temperature variation. Guam is known to have equable temperatures year-round. ] are fairly constant throughout the year. There is often a weak westerly monsoon influence in the summer months.

Guam has two distinct seasons: Wet and dry season. The dry season runs from January through May. June is the transitional period. The wet season runs from July through November. Guam's average annual rainfall was {{convert|98|in|mm|-1|disp=or|sp=us}} between 1981 and 2010.

The wettest month on record at Guam Airport has been August 1997 with {{convert|38.49|in|mm|1}}. The driest was February 2015 with {{convert|0.15|in|mm|1}}. The wettest calendar year was 1976 with {{convert|131.70|in|mm|1}}. The driest year was in 1998 with {{convert|57.88|in|mm|1}}. The most rainfall in a single day occurred on October 15, 1953, when {{convert|15.48|in|mm|1|disp=or|sp=us}} fell.

The mean high temperature is {{convert|86|°F|°C|disp=or}}. The mean low is {{convert|76|°F|°C|1}}. Temperatures rarely exceed {{convert|90|°F|°C|1}} or fall below {{convert|70|°F|°C|1}}. The ] commonly exceeds 84 percent at night throughout the year, but the average monthly humidity hovers near 66 percent.<ref name="Climatological Report">{{cite web|url=http://www.nws.noaa.gov/climate/getclimate.php?date=&wfo=guam&sid=GUM&pil=CLM&recent=yes&specdate=2013-03-04+15%3A20%3A44|title=Climatological Report|publisher=National Weather Service|access-date=February 26, 2014|date=February 26, 2014|url-status=dead|archive-url=https://web.archive.org/web/20140307004247/http://www.nws.noaa.gov/climate/getclimate.php?date=&wfo=guam&sid=GUM&pil=CLM&recent=yes&specdate=2013-03-04+15%3A20%3A44|archive-date=March 7, 2014}}</ref>

The highest temperature ever recorded in Guam was {{convert|96|F|C|1}} on April 18, 1971, and April 1, 1990.<ref name="Climatological Report"/> A record low of {{convert|69|F|C}} was set on February 1, 2021.<ref>{{cite web |last1=Lloyd |first1=Bruce |title=Guam sets a 71-year record for cold temperature on Saturday |url=https://www.guampdn.com/story/news/2021/01/31/guam-weather-cold-temperature-record-saturday/4334204001/ |website=Pacific Daily News |access-date=March 18, 2021 |date=February 1, 2021}}</ref> The lowest recorded temperature was 65&nbsp;°F (18.3&nbsp;°C), set on February 8, 1973.

Guam lies in the path of ]s<ref>{{cite web|title=National Weather Service Dedicated Forecast Office in Typhoon Alley|url=http://www.publicaffairs.noaa.gov/releases2000/apr00/noaa00r235.html|publisher=US NOAA NWS|access-date=August 19, 2012|date=April 27, 2000|url-status=dead|archive-url=https://web.archive.org/web/20130107012415/http://www.publicaffairs.noaa.gov/releases2000/apr00/noaa00r235.html|archive-date=January 7, 2013}}</ref> and it is common for the island to be threatened by tropical storms and possible typhoons during the wet season. The highest risk of typhoons is from August through November, where typhoons and tropical storms are most probable in the western Pacific. They can, however, occur year-round. Typhoons that have caused major damage on Guam in the American period include the ], ] (1962), ] (1976), ] (1997), ] (2002), and ] (2023).

Since ] in 1976, wooden structures have been largely replaced by concrete structures.<ref>{{cite web|url=http://www.rms.com/Catastrophe/Models/Guam.asp|work=Risk Management Solutions|title=Guam Catastrophe Model|access-date=June 16, 2007|url-status=dead|archive-url=https://web.archive.org/web/20110207111227/http://www.rms.com/catastrophe/models/Guam.asp|archive-date=February 7, 2011}}</ref><ref>{{cite web|url=http://www.pacificworlds.com/guam/land/winds.cfm|title=Winds|publisher=PacificWorlds.com|access-date=June 16, 2007|url-status=dead|archive-url=https://web.archive.org/web/20070827132157/http://www.pacificworlds.com/guam/land/winds.cfm|archive-date=August 27, 2007}}</ref> During the 1980s, wooden utility poles began to be replaced by typhoon-resistant concrete and steel poles. After the local Government enforced stricter construction codes, many home and business owners have built their structures out of reinforced concrete with installed ].

{{Weather box
|location = ] (1991–2020 normals, extremes 1945–present)
|single line = Y
|Jan record high F = 94
|Feb record high F = 93
|Mar record high F = 93
|Apr record high F = 96
|May record high F = 94
|Jun record high F = 95
|Jul record high F = 95
|Aug record high F = 94
|Sep record high F = 94
|Oct record high F = 93
|Nov record high F = 92
|Dec record high F = 91
|year record high F = 96

|Jan avg record high F = 88.4
|Feb avg record high F = 88.5
|Mar avg record high F = 89.2
|Apr avg record high F = 90.2
|May avg record high F = 90.8
|Jun avg record high F = 91.1
|Jul avg record high F = 90.8
|Aug avg record high F = 90.6
|Sep avg record high F = 90.4
|Oct avg record high F = 90.4
|Nov avg record high F = 89.9
|Dec avg record high F = 88.8
|year avg record high F = 92.0

|Jan high F = 85.7
|Feb high F = 85.7
|Mar high F = 86.7
|Apr high F = 87.9
|May high F = 88.5
|Jun high F = 88.5
|Jul high F = 87.7
|Aug high F = 87.0
|Sep high F = 87.0
|Oct high F = 87.2
|Nov high F = 87.4
|Dec high F = 86.6
|year high F = 87.2
|Jan mean F = 80.3
|Feb mean F = 80.1
|Mar mean F = 81.0
|Apr mean F = 82.3
|May mean F = 83.0
|Jun mean F = 83.1
|Jul mean F = 82.2
|Aug mean F = 81.5
|Sep mean F = 81.5
|Oct mean F = 81.7
|Nov mean F = 82.2
|Dec mean F = 81.6
|year mean F = 81.7
|Jan low F = 75.0
|Feb low F = 74.6
|Mar low F = 75.4
|Apr low F = 76.7
|May low F = 77.5
|Jun low F = 77.7
|Jul low F = 76.8
|Aug low F = 76.1
|Sep low F = 76.0
|Oct low F = 76.3
|Nov low F = 77.0
|Dec low F = 76.5
|year low F = 76.3

|Jan avg record low F = 71.6
|Feb avg record low F = 71.4
|Mar avg record low F = 71.9
|Apr avg record low F = 73.3
|May avg record low F = 74.1
|Jun avg record low F = 74.6
|Jul avg record low F = 73.8
|Aug avg record low F = 73.4
|Sep avg record low F = 73.3
|Oct avg record low F = 73.4
|Nov avg record low F = 73.9
|Dec avg record low F = 73.3
|year avg record low F = 70.2

|Jan record low F = 66
|Feb record low F = 65
|Mar record low F = 66
|Apr record low F = 68
|May record low F = 70
|Jun record low F = 70
|Jul record low F = 70
|Aug record low F = 70
|Sep record low F = 70
|Oct record low F = 67
|Nov record low F = 68
|Dec record low F = 68
|year record low F = 65
|precipitation colour = green
|Jan precipitation inch = 5.34
|Feb precipitation inch = 4.15
|Mar precipitation inch = 2.77
|Apr precipitation inch = 3.50
|May precipitation inch = 4.45
|Jun precipitation inch = 6.51
|Jul precipitation inch = 12.25
|Aug precipitation inch = 17.66
|Sep precipitation inch = 15.17
|Oct precipitation inch = 12.73
|Nov precipitation inch = 8.29
|Dec precipitation inch = 5.30
|year precipitation inch = 98.12
|unit precipitation days = 0.01 in
|Jan precipitation days = 20.1
|Feb precipitation days = 18.0
|Mar precipitation days = 18.3
|Apr precipitation days = 18.9
|May precipitation days = 19.7
|Jun precipitation days = 23.2
|Jul precipitation days = 26.0
|Aug precipitation days = 25.9
|Sep precipitation days = 25.1
|Oct precipitation days = 25.4
|Nov precipitation days = 23.9
|Dec precipitation days = 22.7
|year precipitation days = 267.2
|Jan humidity = 83.7
|Feb humidity = 81.9
|Mar humidity = 83.1
|Apr humidity = 82.0
|May humidity = 82.7
|Jun humidity = 82.7
|Jul humidity = 87.3
|Aug humidity = 88.7
|Sep humidity = 88.8
|Oct humidity = 88.3
|Nov humidity = 86.6
|Dec humidity = 83.0
|year humidity = 84.9
|Jan sun = 176.0
|Feb sun = 173.7
|Mar sun = 216.4
|Apr sun = 214.0
|May sun = 219.9
|Jun sun = 193.8
|Jul sun = 156.1
|Aug sun = 142.2
|Sep sun = 132.7
|Oct sun = 132.6
|Nov sun = 135.0
|Dec sun = 143.4
|year sun = 2035.8
|Jan percentsun = 50
|Feb percentsun = 53
|Mar percentsun = 58
|Apr percentsun = 57
|May percentsun = 56
|Jun percentsun = 50
|Jul percentsun = 39
|Aug percentsun = 37
|Sep percentsun = 36
|Oct percentsun = 36
|Nov percentsun = 39
|Dec percentsun = 41
|year percentsun = 46
|source 1 = ] (relative humidity and sun 1961–1990)<ref name= NOAA>{{cite web
| url = https://www.weather.gov/wrh/Climate?wfo=gum
| title = NowData - NOAA Online Weather Data
| publisher = National Oceanic and Atmospheric Administration
| access-date = September 11, 2021
| archive-date = September 6, 2021
| archive-url = https://web.archive.org/web/20210906150411/https://www.weather.gov/wrh/Climate?wfo=gum
| url-status = live
}}</ref><ref name=NCEI>{{cite web
| url = https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&startDate=0001-01-01&endDate=9996-12-31&stations=GQW00041415&format=pdf
| title = Station: Guam INTL AP, GU GQ
| work = U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991-2020)
| publisher = National Oceanic and Atmospheric Administration
| access-date = September 11, 2021
| archive-date = September 11, 2021
| archive-url = https://web.archive.org/web/20210911151301/https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&startDate=0001-01-01&endDate=9996-12-31&stations=GQW00041415&format=pdf
| url-status = live
}}</ref><ref name=NOAAsun>
{{cite web
| archive-url = https://web.archive.org/web/20210911151125/https://www.ncei.noaa.gov/pub/data/normals/WMO/1961-1990/TABLES/REG__V/U1/91217.TXT
| archive-date = September 11, 2021
| url = https://www.ncei.noaa.gov/pub/data/normals/WMO/1961-1990/TABLES/REG__V/U1/91217.TXT
| title = WMO Climate Normals for Guam/Marshall Islands, PI 1961–1990
| publisher = National Oceanic and Atmospheric Administration
| access-date = September 11, 2021}}</ref>
}}

=== Ecology ===
{{main|Marianas tropical dry forests}}
{{further|List of endemic plants in the Mariana Islands|List of threatened, endangered and extinct species in the Mariana Islands|Invasive species in Guam|Climate change in Guam|Guam National Wildlife Refuge}}
]
Guam is home to a diverse array of ecosystems,<ref>{{Cite web |title=Natural Environment - Guampedia |url=https://www.guampedia.com/category/natural-environment/ |access-date=2025-01-02 |website=www.guampedia.com}}</ref><ref>{{Cite web |last=Murphy |first=Shannon |date=2011-02-13 |title=Ancient Guam’s Environment - Guampedia |url=https://www.guampedia.com/ancient-guams-environment/ |access-date=2025-01-02 |website=www.guampedia.com |language=en-US}}</ref> including coral reefs,<ref>{{Cite web |last=Pereda |first=Nathalie |date=2019-10-10 |title=Coral Reefs: Essential Ecosystems on Guam - Guampedia |url=https://www.guampedia.com/coral-reefs-essential-ecosystems-on-guam/ |access-date=2025-01-02 |website=www.guampedia.com |language=en-US}}</ref> deep seas, sea grasses,<ref>{{Cite web |last=Murphy |first=Shannon |date=2009-10-01 |title=Seagrasses Overview - Guampedia |url=https://www.guampedia.com/seagrasses-overview/ |access-date=2025-01-02 |website=www.guampedia.com |language=en-US}}</ref> beach strand, mangroves,<ref>{{Cite web |last=Pereda |first=Nathalie |date=2017-08-04 |title=Mangroves: The Forest Between Land and Sea - Guampedia |url=https://www.guampedia.com/mangroves-the-forest-between-land-and-sea/ |access-date=2025-01-02 |website=www.guampedia.com |language=en-US}}</ref> a variety of different ] types,<ref>{{Cite web |last=Pereda |first=Nathalie |date=2019-10-02 |title=Limestone Forests of Guam - Guampedia |url=https://www.guampedia.com/limestone-forests-of-guam/ |access-date=2025-01-02 |website=www.guampedia.com |language=en-US}}</ref><ref>{{Cite journal |last=Fosberg |first=F. Raymond |date=1960 |title=The Vegetation of Micronesia. 1, General descriptions, the vegetation of the Marianas Islands, and a detailed consideration of the vegetation of Guam |url=https://digitallibrary.amnh.org/items/b7a6abd7-e958-47d7-98aa-89efd6c2da30 |journal=Bulletin of the AMNH |volume=119 |issue=1 |via=American Museum of Natural History}}</ref> volcanic forests and grasslands,<ref>{{Cite web |last=Pereda |first=Nathalie |date=2017-08-04 |title=Badlands in Southern Guam - Guampedia |url=https://www.guampedia.com/badlands-in-southern-guam/ |access-date=2025-01-02 |website=www.guampedia.com |language=en-US}}</ref> ], and caves.<ref>{{Cite web |last=Pereda |first=Nathalie |date=2019-10-02 |title=Guam’s Amazing Caves - Guampedia |url=https://www.guampedia.com/guams-amazing-caves/ |access-date=2025-01-02 |website=www.guampedia.com |language=en-US}}</ref> There are approximately 17 species of plant that are endemic only to the island of Guam, and many more that are ]. Numerous endemic insects have been described.<ref>{{Cite book |url=http://hbs.bishopmuseum.org/pubs-online/pdf/bull172.pdf |title=Insects of Guam-I, Bulletin 172 |date=1942 |publisher=Bernice P. Bishop Museum}}</ref><ref>{{Cite book |url=http://hbs.bishopmuseum.org/pubs-online/pdf/bull189.pdf |title=Insects of Guam-II, Bulletin 189 |date=1946 |publisher=Bernice P. Bishop Museum}}</ref><ref>{{Cite web |title=Insects of Micronesia |url=http://hbs.bishopmuseum.org/pubs-online/iom.html |access-date=2025-01-02 |website=hbs.bishopmuseum.org}}</ref> There are approximately 29 ] listed as endemic to the island of Guam, although many are now endangered or presumed extinct.<ref>{{Cite web |last=Murphy |first=Shannon |date=2013-04-23 |title=Land Snails (Akaleha’) of the Mariana Islands - Guampedia |url=https://www.guampedia.com/land-snails-akaleha-of-the-mariana-islands/ |access-date=2025-01-02 |website=www.guampedia.com |language=en-US}}</ref><ref>{{Cite book |last=Kerr |first=Alexander M. |url=https://www.uog.edu/_resources/files/ml/technical_reports/148Kerr_and_Bauman_2013_UOGMLTechReport148.pdf |title=Annotated Checklist of the Land snails of the Mariana Islands, Micronesia |last2=Bauman |first2=Scott |date=2013 |publisher=University of Guam (UOG)}}</ref> Guam once hosted 14 kinds of terrestrial ], 7 of which were endemic to Guam on the species or subspecies level, although all but one of the 14 are now ].<ref>{{Cite web |last=Murphy |first=Shannon |date=2009-09-30 |title=Native Forest Birds of Guam - Guampedia |url=https://www.guampedia.com/a-native-forest-birds-of-guam/ |access-date=2025-01-02 |website=www.guampedia.com |language=en-US}}</ref> Three locations on Guam (], ], and Mahlac Caves) have been identified as ] (IBA) by ] because they support populations of ], ], ], and Guam rails. The ] became the second bird species to ever be downlisted from ] after a population was established on Cocos Island.<ref>{{Cite web |date=2019-12-10 |title=Species recoveries bring hope amidst the biodiversity crisis - IUCN Red List {{!}} IUCN |url=https://iucn.org/news/species/201912/species-recoveries-bring-hope-amidst-biodiversity-crisis-iucn-red-list |access-date=2025-01-07 |website=iucn.org |language=en}}</ref> Guam was home to three native bat species: the ] (''Pteropus tokudae''), now extinct; the endangered ] (''Emballonura semicaudata rotensis''); and the endangered ] (''Pteropus mariannus mariannus'').

] nearly eradicated the native bird population.]]
Guam has experienced severe effects of ] upon the natural ] of the island. These include the ] of endemic bird species after the introduction of the ], an infestation of the ] destroying ] palms, and the effect of introduced ] ]s and ]s.

]s plague the forested areas of Guam every ] despite the island's humid climate. Most fires are caused by humans with 80% resulting from ].<ref>{{cite web|url=http://www.guamforestry.org/docs/final_guam_2004.pdf|title=Territory of Guam Fire Assessment January 2004|access-date=March 24, 2009|url-status=dead|archive-url=https://web.archive.org/web/20090324224423/http://www.guamforestry.org/docs/final_guam_2004.pdf|archive-date=March 24, 2009}}, pp. 6–7, guamforestry.org</ref> Poachers often start fires to attract deer to the new growth. Invasive grass species that rely on fire as part of their natural life cycle grow in many regularly burned areas. Grasslands and "barrens" have replaced previously forested areas leading to greater soil erosion.<ref name="National Park Service">{{cite web|url=http://www.nps.gov/archive/wapa/indepth/Park/Natural/fire/fireguam.htm|archive-url=https://web.archive.org/web/20071213232039/http://www.nps.gov/archive/wapa/indepth/Park/Natural/fire/fireguam.htm|archive-date=December 13, 2007|work=]|author=National Park Service|title=Fire and Guam|access-date=June 16, 2007|author-link=National Park Service}}</ref>

During the rainy season, sediment is carried by the heavy rains into the ] Reservoir and ], leading to water quality problems for southern Guam. Eroded silt also destroys the marine life in reefs around the island. Soil stabilization efforts by volunteers and forestry workers (planting trees) have had little success in preserving natural habitats.<ref name="National Park Service" />], ] is now a marine preserve.]]
Efforts have been made to protect Guam's coral reef habitats from pollution, eroded silt and overfishing, problems that have led to decreased fish populations. This has both ecological and economic value, as Guam is a significant ], and one study found that Guam's reefs are worth $127 million per year.<ref>{{cite news |last1=Brown |first1=Val |title=Guam's Reefs are Important to Guam's Culture and Economy |url=https://www.newspapers.com/image/646794275 |access-date=October 1, 2021 |work=Pacific Daily News |date=May 30, 2008 |location=Agana Heights, Guam |page=5 |quote=The results indicated that Guam's reefs are worth $127 million per year |archive-date=October 1, 2021 |archive-url=https://web.archive.org/web/20211001213252/http://www.newspapers.com/image/646794275/ |url-status=live }}</ref> In recent years, the Department of Agriculture, Division of Aquatic and Wildlife Resources has established several new marine preserves where fish populations are monitored by biologists.<ref>{{cite news |url=http://www.guampdn.com/guampublishing/special-sections/mlsea/8-future.htm |archive-url=https://wayback.archive-it.org/all/20170525022205/http://content%2Dstatic.guampdn.com/guampublishing/special%2Dsections/mlsea/8%2Dfuture.htm |url-status=dead |archive-date=May 25, 2017 |work=Pacific Daily News |title=Guam's Marine Preserves |last=Brown |first=Valerie |access-date=June 16, 2007 }}</ref> These are located at ], ], ], Achang Reef Flat, and ].<ref>{{cite web |title=Sea Life |url=https://www.visitguam.com/chamorro-culture/nature/sea-life/ |website=Guam Visitors Bureau |access-date=May 20, 2020 |archive-date=May 31, 2020 |archive-url=https://web.archive.org/web/20200531225300/https://www.visitguam.com/chamorro-culture/nature/sea-life/ |url-status=live }}</ref>

Before adopting ] standards, portions of Tumon Bay were dredged by the hotel chains to provide a better experience for hotel guests.<ref>{{cite web|url=http://www.guamepa.govguam.net/programs/epr/sediment_report.pdf|work=EPA Guam Report|title=Management of Contaminated Harbor Sediments in Guam|url-status=live|archive-url=https://web.archive.org/web/20070808031615/http://www.guamepa.govguam.net/programs/epr/sediment_report.pdf|archive-date=August 8, 2007}}</ref><ref>{{cite web|url=http://www.pcrguam.com/press_releases/Tumon_Bay.htm|work=Directions Magazine; June/July 1996|title=Tumon Bay – Engineering a Better Environment|author=Packbier, Paul E.R.|access-date=October 19, 2011|url-status=dead|archive-url=https://web.archive.org/web/20110726141402/http://www.pcrguam.com/press_releases/Tumon_Bay.htm|archive-date=July 26, 2011}}</ref> Tumon Bay has since been made into a preserve. A federal ] in northern Guam protects the decimated ] population in addition to a small colony of ].<ref>{{cite journal|last=Holmes III|first=Rolston|title=Environmental Ethics in Micronesia, Past and Present, Part II—Guam Today: Still "on the Edge." Colonial Legacy and American Presence|journal=International Society for Environmental Ethics Newsletter|volume=12|issue=3|year=2001|url=http://www.cep.unt.edu/ISEE/n12-3-01.htm|access-date=June 16, 2007|archive-url=https://web.archive.org/web/20070609092403/http://www.cep.unt.edu/ISEE/n12-3-01.htm|archive-date=June 9, 2007|url-status=live}}</ref>

Harvest of sea turtle eggs was a common occurrence on Guam before World War II. The ] (''Chelonia mydas'') was harvested legally on Guam before August 1978, when it was listed as threatened under the Endangered Species Act. The ] (''Eretmochelys imbricata'') has been on the endangered list since 1970. In an effort to ensure the protection of sea turtles on Guam, routine sightings are counted during aerial surveys and nest sites are recorded and monitored for hatchlings.

== Geology ==

Two Lovers Point, a national natural monument, is a coralline limestone sea cliff north of Guam.

The tip of the heavily submerged Eastern Mariana Ridge, part of the Izu-Bonin Mariana Islands. Mariana (IBM) Arc . The IBM Arc is a convergent tectonic plate boundary where the western part of the Pacific Plate is subducted beneath the ]. Guam is located on the Mariana Plate, a microplate between two larger plates. The subduction zone is marked by the ], which is the deepest trench on planet Earth. The three deepest places are located south of Guam. From east to west they are:

• '''Nero Trench''', 9,660 m (31,690 ft) deep, the deepest known in the ocean from 1899 to 1927 <gallery>
File:Life in the Roman world of Nero and St. Paul (IA cu31924028268096).pdf|'''Life in the Roman world of Nero and St. Paul'''
</gallery>• '''Sirena Trench''', third deepest at 10,714 m ( 35,151 feet)<gallery>
File:GEBCO 2019 bathymetry Challenger Deep and Sirena Deep.jpg|'''GEBCO 2019 bathymetry Challenger Deep and Sirena Deep.'''
</gallery>• '''Challenger Deep''', the deepest point depth is 10,902 meters (35,768 feet) up to 10,929 meters (35,856 feet).<gallery>
File:Address to the Royal Geographical Society (IA jstor-1799282).pdf|'''Address to the Royal Geographical Society'''
</gallery>Guam has had three major eruptions in its history. On the southwest coast, the first eruption in the Middle Eocene produced the Fakpi Formation, still the largest formation, and laid the foundation of the island. A second eruption created the Alutom Formation, which is still the uppermost formation in the middle of the island. The Mount Alifan-Mount Lamlam ridge is the remnant of the Alutom Formation caldera:7.

The last volcanic layer, called the Umatak Formation, was formed by the third and final eruption in southern Guam.

Volcanic activity. alternating inundations of islands with coral reefs, these reefs are raised and rotated in limestone. in the center, low hills of the Alutom Formation; the mountains of the Umatak Formation to the south; and the coastal lowlands that surround most of the island.

Much of the coast is protected by a fringing reef.

The soils are generally silt-clay or clayey, and may be grey, black, brown or reddish-brown; acidity and depth vary.

Guam has four National Natural Monuments, geologic specimens of the island: Fakpi Point, Fuha Point, Lam Lam Mountain, and Two Lover's Point.


'''Earthquakes'''
The ] ] of the island in the ] ]. Guam came to serve as a way station for American ships traveling to and from the Philippines, while the northern Mariana islands passed to ] then Japan.


Guam occasionally experiences earthquakes, the epicenter Most of them are located near Guam, the magnitude ranges from 5.0 to 8.7. Unlike ] in the ], Guam is not volcanically active, although volcanic smog from ] affects it due to its close proximity.
During ], Guam was attacked and invaded by the Japanese armed forces on ], ]. Before the attack, all military dependents were transported from the island and away from imminent danger. The Northern Mariana Islands had become a Japanese protectorate before the war. It was the Chamorros from the Northern Marianas who were brought to Guam to serve as interpreters and in other capacities for the occupying Japanese force. The Guamanian Chamorros were treated as an occupied enemy by the Japanese military. After the war, this would cause some resentment by the Guamanian Chamorros towards the Chamorros in the Northern Marianas. Guam's occupation lasted for approximately thirty-one months. During this period, the indigenous people of Guam were subjected to forced labor, family separation, incarceration, execution, concentration camps and prostitution. Approximately a thousand people died during the occupation according to Congressional Testimony in ]. The United States returned and fought the ] on ], ], to recapture the island from Japanese military occupation. The U.S. also captured and occupied the Northern Marianas. After the war, The ], which established Guam as an unincorporated ] of the United States, provided for the structure of the island's government, and granted the people United States citizenship.


==Demographics== ==Demographics==
{{US Census population
The native and largest ethnic group are the Chamorros accounting for 47% of the total population. Other noticeable ethic groups: Filipino 25%, Caucasian 10%, Chinese, Japanese, Korean, and other 18%
|1910=11806
|1920=13275
|1930=18509
|1940=22290
|1950=59498
|1960=67044
|1970=84996
|1980=105979
|1990=133152
|2000=154805
|2010=159358
|2020=168485}}
{{Main|Demographics of Guam}}
In the ], the largest ethnic group were the native ], accounting for 32.8% of the population. ], including Filipinos, Koreans, Chinese, and Japanese, accounted for 35.5% of the population. Other ethnic groups of ], including those of ], ], and ], accounted for 13.2%. 10% of the population were ], (two or more races). ] made up 6.8% of the population; 1% are ], and 3% are ]; there are 1,740 ] in Guam, and there are other Hispanic ethnicities on the island. The estimated interracial marriage rate is over 40%.<ref name="CIA Factbook"/>


The official languages of the island are English and ]. Unlike most of its neighboring languages, Chamorro is not classified as ] or ]. Rather, like ], it possibly constitutes an independent branch of the ].<ref name="Blust 2000 83–122"/><ref name="Smith 2017 435–490"/> ] is also commonly spoken across the island. Other Pacific and Asian languages are spoken in Guam as well. ], which was the language of administration for 300 years, influenced the ].<ref>{{cite web|url=https://www.dewittguam.com/what-languages-are-spoken-guam/|title=What Languages Are Spoken on Guam?|website=DeWitt Guam|date=November 2021|access-date=December 24, 2022|archive-date=December 24, 2022|archive-url=https://web.archive.org/web/20221224010952/https://www.dewittguam.com/what-languages-are-spoken-guam/|url-status=live}}</ref>
Historically, Guam had no religion before the Spanish colonization{{Fact|date=March 2007}}. Today, Roman Catholicism is the largest religion with 85% attesting to it. Other religions make up the remaining 15%.


{{anchor|Religion}}The predominant religion of Guam is ]. Three-quarters of the population adheres to ], while most of the remainder belong to ] churches. According to the ], the religious demography of Guam in 2010 was as follows:<ref>{{cite web|url=http://www.globalreligiousfutures.org/countries/guam#/?affiliations_religion_id=0&affiliations_year=2010|title=Guam - Religious Demography: Affiliation|website=Pew-Templeton Global Religious Futures Project|access-date=March 25, 2021|archive-date=July 1, 2020|archive-url=https://web.archive.org/web/20200701045401/http://www.globalreligiousfutures.org/countries/guam#/?affiliations_religion_id=0&affiliations_year=2010|url-status=live}}</ref>
The official language of the island is English and Chamorro.
{{div col|colwidth=20em}}
* ]: 75%
* ]: 17.7%
* Other religions: 1.6%
* Folk religions: 1.5%
* Other Christianity: 1.4%
* ]: 1.1%
* ]: <1%
* ]: <1%
* ]: <1%
* ]: <1%
{{div end}}

In 2020, the Vatican claimed that 87.72% of the population was Catholic, with 54 priests and 64 nuns across 27 parishes.<ref>{{Cite web|url=https://www.catholicsandcultures.org/guam|title=Guam &#124; Catholics & Cultures|website=www.catholicsandcultures.org}}</ref>


==Culture== ==Culture==
] in ] opened in 2016]]
<!-- Unsourced image removed: ] -->
{{main|Culture of Guam}}
{{further|Chamorro people|Music of Guam}}
The culture of Guam is a reflection of traditional ] customs, in combination with American, Spanish and Mexican traditions.{{sfn|Wuerch|Ballendorf|1994|p=44}} Post-European-contact ] Guamanian culture is a combination of American, Spanish, Filipino, other Micronesian Islander and Mexican traditions. Few indigenous pre-Hispanic customs remained following Spanish contact, but include plaiting and pottery. There has been a resurgence of interest among the Chamorro to preserve the language and culture.<ref name="Montón-Subías-2021">{{Cite journal |last1=Montón-Subías |first1=Sandra |last2=Hernando Gonzalo |first2=Almudena |date=August 28, 2021 |title=Modern Colonialism and Cultural Continuity Through Material Culture: An Example from Guam and CHamoru Plaiting |journal=International Journal of Historical Archaeology |volume=26 |issue=3 |pages=823–847 |language=en |doi=10.1007/s10761-021-00626-3 |s2cid=239658158 |issn=1573-7748|doi-access=free |hdl=10230/53171 |hdl-access=free }}</ref><ref name="» Voices of Our Elders">{{Cite web |title=» Voices of Our Elders |url=https://www.guampedia.com/voices-of-our-elders/ |access-date=April 26, 2022 |website=www.guampedia.com |date=November 4, 2015 |archive-date=April 21, 2022 |archive-url=https://web.archive.org/web/20220421141653/https://www.guampedia.com/voices-of-our-elders/ |url-status=live }}</ref>


Traditional ] culture is visually manifested in ], sea ], unique ], ] (batu, chonka, estuleks, and bayogu), ] and ] influenced by the ] of peoples from other lands. Spanish policy during colonial rule (1668-1898) was one of conquest and conversion to ]. This led to the gradual elimination of Guam's male warriors and displacement of the Chamorro people from their lands. In spite of the social upheavals, Guam's ] - "I Maga'håga", successfully kept continuous the indigenous culture, language and traditions. Hispanic influences are manifested in the local language, music, dance, sea navigation, cuisine, fishing, games (such as {{transliteration|ch|batu}}, {{transliteration|ch|chonka}}, {{transliteration|ch|estuleks}}, and {{transliteration|ch|bayogu}}), songs, and fashion.<ref name="Montón-Subías-2021"/><ref name="» Voices of Our Elders"/> The island's original community are Chamorro natives, who have inhabited Guam for almost 4000 years.{{sfn|Cunningham|Beaty|2001|p=5-6}} They had their own language related to the languages of Indonesia and southeast Asia. The Spanish later called them Chamorros. A derivative of the word, Chamorri, means "noble race". They began to grow rice on the island.{{sfn|Cunningham|Beaty|2001|p=5}}


], 2012]]
Historian Lawrence Cunningham in ] wrote, "In a Chamorro sense, the land and its produce belong to everyone. ], or interdependence, is the key, or central value, in Chamorro culture ... Inafa'maolek depends on a spirit of cooperation. This is the armature, or core, that everything in Chamorro culture revolves around. It is a powerful concern for mutuality rather than ] and private property rights."
Historically, the native people of Guam venerated the bones of their ancestors. They kept the skulls in their houses in small baskets, and practiced incantations before them when it was desired to attain certain objects.{{sfn|Safford|1912|p=11}} During Spanish rule (1668–1898) the majority of the population was converted to ] and religious festivities such as Easter and Christmas became widespread. Many Chamorros have ], although few of the inhabitants are themselves descended from the Spaniards. Instead, Spanish names and surnames became commonplace after their conversion to Catholicism and the imposition of the ] in Guam.<ref>{{cite book |last=Boquet |first=Yves |date=2017 |title=The Philippine Archipelago |series=Springer Geography |url=https://link.springer.com/book/10.1007/978-3-319-51926-5 |location= |publisher=Springer |page=75 |isbn=978-3-319-51926-5 |doi=10.1007/978-3-319-51926-5 |s2cid=132890899 |access-date=November 19, 2022 |archive-date=November 7, 2022 |archive-url=https://web.archive.org/web/20221107070418/https://link.springer.com/book/10.1007/978-3-319-51926-5 |url-status=live }}</ref>


Historically, the diet of the native inhabitants of Guam consisted of fish, fowl, rice, ], ], ], bananas, and coconuts used in a variety of dishes.{{sfn|Safford|1912|pp=13–14}} Post-contact Chamorro cuisine is largely based on corn, and includes tortillas, tamales, atole, and chilaquiles, which are a clear influence from ], principally Mexico, from Spanish trade with Asia.{{citation needed|date=March 2021}}
The core culture or Pengngan Chamorro is comprised of complex social protocol centered upon respect: From the kissing of the hands of the elders (inspired by the kissing of a Roman Catholic bishop's ring by those whom he oversees), passing of legends, chants, and ] rituals, to a person requesting forgiveness from spiritual ancestors when entering a jungle. Other practices predating Spanish conquest include ]making, making of the Belembautuyan {a string musical instrument}, fashioning of ]s and slingstones, ] manufacture, ] rituals and preparation of herbal ]s by ].


Due to foreign cultural influence from Spain, most aspects of the early indigenous culture have been lost, though there has been a resurgence in preserving any remaining pre-Hispanic culture in the last few decades. Some scholars have traveled throughout the Pacific Islands, conducting research to study what the original Chamorro cultural practices such as dance, language, and canoe building may have been like.<ref>{{cite journal|doi=10.1353/cp.2015.0021|title=Guam |year=2015 |last1=Marsh |first1=Kelly G. |last2=Taitano |first2=Tyrone J. |journal=The Contemporary Pacific |volume=27 |pages=223–232 |s2cid=258106437 }}</ref>
Master craftsmen and women specialize in weavings, including plaited work (Niyok-coconut and ]-leaf baskets, mats, bags, food containments and hats), ]-woven material (] and ] fiber skirts, belts and burial shrouds), and body ornamentation (bead and shell necklaces, bracelets, earrings, belts and combs made from ] shells). Today only few masters exist to continue these traditional art forms.


===Sports===
Recently the people of Guam have been feeling the impact of ] with the fading of traditional culture.
] team at ]]]
Guam's most popular sport is ], followed by ] and ] respectively. ], ], and ] are also somewhat popular.<ref>{{cite news |author1=Robert Balajadia |title=GUAM'S FAVORITE PRO TEAMS |url=https://www.guamsportsnetwork.com/2014/guams-favorite-pro-teams/ |access-date=January 21, 2021 |work=Guam Sports Network |date=January 10, 2014 |archive-date=January 20, 2021 |archive-url=https://web.archive.org/web/20210120163244/https://www.guamsportsnetwork.com/2014/guams-favorite-pro-teams/ |url-status=live }}</ref> Guam hosted the ] in ] and ]. At the ], Guam finished 7th of 22 countries in the medal count, and 14th at the ].


] and the ] are traditional powerhouses in the ], behind the ] and the ]. {{as of|2019}}, the men's team is the reigning champion of the ]. Guam is home to various basketball organizations, including the ].<ref>{{Cite web|url=https://www.guamsportsnetwork.com/2017/gba-bombers-hold-off-mvp-season-3-title/|title=GBA: Bombers hold off MVP for season 3 title|date=May 30, 2017 |access-date=June 3, 2017|archive-url=https://web.archive.org/web/20170717021834/https://www.guamsportsnetwork.com/2017/gba-bombers-hold-off-mvp-season-3-title/|archive-date=July 17, 2017|url-status=live}}</ref><ref>{{cite news|first=Jojo Santo|last=Tomas|title=Samoa Pacific Games: Guam basketball teams notch wins|url=https://eu.guampdn.com/story/sports/pacific-games/2019/07/12/guam-basketball-samoa-pacific-games/1721976001/|access-date=January 10, 2021|work=]|date=April 9, 2020}}{{Dead link|date=January 2022 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
==Government and politics==
]
{{main|Politics of Guam}}
Guam is governed by a popularly elected ] and a ] 15 member ]. Guam elects one non-voting delegate to the ], currently Congresswoman ]. During U.S. Presidential elections, citizens in Guam vote in a ] for their choice of president--which doesn't count toward the general election results.


The ] was founded in 1975 and joined ] in 1996. It was once considered one of FIFA's weakest teams, and experienced their first victory over a FIFA-registered side in 2009. Guam hosted qualifying games on the island for the first time in 2015 and, in 2018, clinched their first ] win.<ref>{{Cite web|title=2018 FIFA World Cup Russia - Qualifiers - Asia |url=https://www.fifa.com/worldcup/preliminaries/asia/index.html#275171|website=FIFA.com|access-date=September 12, 2015|last=FIFA.com|url-status=dead|archive-url=https://web.archive.org/web/20150905082559/http://www.fifa.com/worldcup/preliminaries/asia/index.html#275171|archive-date=September 5, 2015}}</ref> The ] played its first match in 2005 and has never qualified for a ].
In the ] and early ], there was a significant movement in favor of the territory becoming a ], which would give it a political status similar to ] and the ]. However, the federal government gave no response to Guam's request for commonwealth status for a decade before Guam leaders gave up the quest in the late 1990s. Competing movements with less significant influence exist, which advocate political independence from the United States, statehood, or a combination with the Northern Mariana Islands as a single commonwealth. These proposals however, are not seen as favorable or realistic within the U.S. federal government, which argues Guam does not have the financial stability or self sufficiency to warrant such status. The same sources quickly provide evidence of Guam’s increasing reliance on federal spending, and question how commonwealth status or statehood would benefit the United States as a greater whole.{{Fact|date=February 2007}}


As an aspect of cultural revival, ] competitions are also being organized on Guam. As a national pastime of cultural import, the ovoid shape on Guamanian flag is that of a sling stone.<ref>{{cite web |url=https://slinging.org/forum/YaBB.pl?num=1581637436 |title=Slinging.org Forum - Guam 2021 |access-date=January 21, 2021 |work=Guam Sports Network |date=December 10, 2020 |archive-date=January 18, 2021 |archive-url=https://web.archive.org/web/20210118040452/https://slinging.org/forum/YaBB.pl?num=1581637436 |url-status=live }}</ref><ref>{{cite web |title=Guam And {{as written|I|t's }} Potential Impact On The Global Slinging Community |url=https://fokai.tv/guam-and-its-potential-impact-on-the-global-slinging-community-slinging-org/ |website=Fokai |archive-url=https://web.archive.org/web/20230323075912/https://fokai.tv/guam-and-its-potential-impact-on-the-global-slinging-community-slinging-org/ |archive-date=March 23, 2023 |url-status=live |access-date=April 7, 2023 }}</ref>
{{seealso|List of Guam Governors}}


==Economy==
==Administrative divisions==
]]]
{{main|Economy of Guam}}
{{See also|Energy in Guam|Underwater diving on Guam}}
{{Update section|date=January 2019}}
Guam's economy depends primarily on tourism, Department of Defense installations and locally owned businesses. Under the provisions of a special law by ], it is Guam's treasury rather than the U.S. treasury that receives the federal income taxes paid by local taxpayers, including military and civilian federal employees assigned to Guam.<ref name="Americans, Almost and Forgotten">Lin, Tom C.W., {{Webarchive|url=https://web.archive.org/web/20200921093931/https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3454210 |date=September 21, 2020 }}, 107 California Law Review (2019)</ref>


===Tourism===
{{main|Villages of Guam}}
{{See also|Underwater diving on Guam}}
Guam is divided into nineteen ]s.
Lying in the western Pacific, Guam is a popular destination for Japanese and South Koreans. Its tourist hub, ], features over 20 large hotels, a Duty Free Shoppers Galleria, Pleasure Island district, indoor aquarium, Sandcastle ]–styled shows and other shopping and entertainment venues. It is a relatively short flight from Asia, with 3 to 4-star hotels and seven public golf courses accommodating over a million tourists per year.<ref name="visitguam.org">{{cite web|url=http://www.visitguam.org/members/?pg=research|title=Guam Visitors Bureau Tourist Statistics|access-date=August 27, 2007|url-status=dead|archive-url=https://web.archive.org/web/20070827061618/http://www.visitguam.org/members/?pg=research|archive-date=August 27, 2007}}. visitguam.org</ref>


75% of the tourists are Japanese. Guam also receives a sizable number of tourists from South Korea, the U.S., the Philippines, and Taiwan.<ref name="visitguam.org"/> Significant sources of revenue include ] designer shopping outlets, and the American-style malls: ], ], the ], and the world's largest ].<ref name="The Washington Post">{{cite news|last1=Jordan|first1=Mary|last2=Sullivan|first2=Kevin|title=KMART IS AN EASY SELL ON GUAM|url=https://www.washingtonpost.com/archive/politics/1999/01/02/kmart-is-an-easy-sell-on-guam/74091263-e16f-488b-bca2-8ead3dbe5205/|newspaper=Washington Post|date=January 2, 1999|access-date=August 9, 2017|url-status=live|archive-url=https://web.archive.org/web/20161114073224/https://www.washingtonpost.com/archive/politics/1999/01/02/kmart-is-an-easy-sell-on-guam/74091263-e16f-488b-bca2-8ead3dbe5205/|archive-date=November 14, 2016}}</ref>
The U.S. military maintains jurisdiction over bases comprising approximately one quarter of the island's area:
*], Yigo
*], Tiyan (now administered by the government of Guam)
*], Orote peninsula
*], South Central Highlands (formerly known as Naval Magazine)
*], Barrigada and Finegayan


]. The airport hosts a hub of ], Guam's largest private-sector employer.]]
== Economy ==
The economy had been stable since 2000 due to increased tourism.<ref>{{Cite web |title=- Territories of Guam, American Samoa, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands |url=https://www.govinfo.gov/content/pkg/CHRG-109shrg28058/html/CHRG-109shrg28058.htm |access-date=September 13, 2022 |website=www.govinfo.gov |archive-date=September 13, 2022 |archive-url=https://web.archive.org/web/20220913160258/https://www.govinfo.gov/content/pkg/CHRG-109shrg28058/html/CHRG-109shrg28058.htm |url-status=live }}</ref> Previously, it was expected to stabilize with a planned transfer of U.S. Marine Corps' ], in ], Japan (approximately 8,000 Marines, along with their 10,000 dependents), to Guam between 2010 and 2015. However, the move was delayed until late 2020. Also, the number of Marines to be moved from Okinawa to Guam decreased from 10,000 to 5,000, with the move now expected to be complete in 2025.<ref name="III MEF Move to Guam">{{cite web|url=https://www.military.com/daily-news/2020/10/01/marines-activate-camp-blaz-guam-corps-first-new-base-1952.html|title=IIIMEF Move|date=October 2020|access-date=February 11, 2021|archive-date=March 5, 2021|archive-url=https://web.archive.org/web/20210305212029/https://www.military.com/daily-news/2020/10/01/marines-activate-camp-blaz-guam-corps-first-new-base-1952.html|url-status=live}}</ref>
Guam's economy depends primarily on tourism, the United States military base presence, and other federal spending. Although Guam receives no foreign aid, it does receive large transfer payments from the general revenues of the ] into which Guam pays no income or excise taxes; under the provisions of a special law of ], the Guam treasury, rather than the U.S. treasury, receives federal income taxes paid by military and civilian federal employees stationed in Guam.


{{As of|2008}}, Guam's largest single private sector employer with about 1,400 jobs, was ], a subsidiary of ].<ref>Kerrigan, Kevin. {{cite web|url=http://www.pacificnewscenter.com/index.php?option=com_content&view=article&id=4897:cont-mic&catid=45:guam-news&Itemid=156|archive-url=https://web.archive.org/web/20100511080356/http://www.pacificnewscenter.com/index.php?option=com_content&view=article&id=4897%3Acont-mic&catid=45%3Aguam-news&Itemid=156|archive-date=May 11, 2010|title=Guam Will Be The Pacific Hub for Merged Airlines|url-status=dead|access-date=August 20, 2016}}. ''Pacific News Center'' (May 5, 2010). Retrieved October 5, 2010. "Continental Micronesia is Guam's single largest employer. About 1400 jobs here on dependent on the airline."</ref> Continental Airlines merged with and is now a part of ], a subsidiary of Chicago-based United Airlines Holdings, Inc.<ref>" {{Webarchive|url=https://web.archive.org/web/20110128152147/http://ir.unitedcontinentalholdings.com/phoenix.zhtml?c=83680&p=irol-homeprofile|date=January 28, 2011}}." () ]. Retrieved November 16, 2012.</ref> {{As of|2008}} the Continental Micronesia annual payroll in Guam was $90 million.<ref name="Blairbright">{{cite journal|last=Blair|first=Chad|date=May 30, 2008|url=http://pacific.bizjournals.com/pacific/stories/2008/06/02/story3.html|title='Air Mike' a rare bright spot in local aviation|journal=Pacific Business News|url-status=live|archive-url=https://web.archive.org/web/20080617234010/http://pacific.bizjournals.com/pacific/stories/2008/06/02/story3.html|archive-date=June 17, 2008}}</ref>
Sometimes called "America in Asia," Guam is a popular destination for Japanese, Korean, and Chinese tourists, and with over 20 large hotels, a DFS Galleria, Pleasure Island aquarium, SandCastle ] shows and other shopping and entertainment features in its chief tourism city of ]. It is a relatively short flight from Asia compared to ], with hotels and golf courses catering to tourists. About 90 percent of tourists to Guam are Japanese. Significant sources of revenue include ] designer shopping outlets, and the American-style malls: ], ], and the ], also the ].


=== Budget and unemployment ===
The economy had been stable since 2000 due to increased tourism, mainly from Japan, but took a recent downturn along with the rest of Asia. It is expected to stabilize when US Marine personnel and operations currently in ] (appr. 8000, along with their 10,000 dependents) will transfer to Guam sometime in 2007-2008. Guam has a 14% unemployment rate, and the government suffered a $314 million shortfall in 2003.
In 2003, Guam had a 14% unemployment rate, and the government suffered a $314 million budget shortfall.<ref name=PCW>{{cite web|url=http://pacificweb.org/guam/2004+Guam+Yearbook/2004_Guam_Yearbook_FinalR2_Full+Version.pdf|title=2004 Guam Yearbook|access-date=July 19, 2007|url-status=dead|archive-url=https://web.archive.org/web/20051029043436/http://pacificweb.org/guam/2004%20Guam%20Yearbook/2004_Guam_Yearbook_FinalR2_Full%20Version.pdf|archive-date=October 29, 2005}}</ref> As of 2019 the unemployment rate had dropped to 6.1%. By September 2020, the unemployment rate had risen again to 17.9%.<ref name="Guam BLS">{{cite web|url=http://bls.guam.gov/|title=Guam BLS|access-date=February 11, 2021|archive-date=February 13, 2015|archive-url=https://web.archive.org/web/20150213092008/http://bls.guam.gov/|url-status=live}}</ref> As of June 2023 the unemployment rate had fallen to 4.0%.<ref>{{Cite web |title=Unemployment Situation on Guam – Bureau of Labor Statistics |url=https://bls.guam.gov/unemployment-situation-on-guam/ |access-date=November 22, 2023}}</ref> The unemployment rate in Guam for September 2023 was 4.1%, an increase of 0.1 percentage points from the June 2023 figure of 4.0%, and a reduction of 0.3 percentage points from the September 2022 figure one year earlier of 4.4%.<ref>{{cite web | url=https://bls.guam.gov/unemployment-situation-on-guam/ | title=Unemployment Situation on Guam – Bureau of Labor Statistics }}</ref>


=== Pacific migration to Guam ===
"The " between the United States of America, the Federated States of Micronesia, and the Republic of the Marshall Islands was signed in 1982, and ratified in 1986. It accorded the former entities of the Trust Territory of the Pacific Islands a political status of 'free association'" with the United States. The Compact was an agreement to which Guam was not a party. Over the years, it was claimed by some in Guam that the territory has had to bear the brunt of this agreement in the form of public assistance programs and public education for those from the regions involved, but was never compensated by the federal government for its expenditures.
The ] (COFA) between the United States, the ], the Republic of the ], and the Republic of ] accords the former entities of the ] a political status of "free association" with the United States. The Compacts generally allow citizens of these island nations to reside in the 50 United States, and in US territories. Many people from other Pacific islands were attracted to Guam due to its proximity, environmental, and cultural familiarity.


Due to the impact of increased utilization of public assistance programs due to immigration, aid has been provided to the nations receiving immigrants. In 2003, the amended COFA was enacted, which provided 30 million dollars annually to Guam, Hawaii, ] and the ], as well as to forgive 157 million dollars of Guam's debt to the federal government to offset money already spent on public assistance programs.<ref>{{Cite act | title = Compact of Free Associate Amendments Act of 2003 | year = 2003 | url = https://www.doi.gov/sites/doi.gov/files/uploads/public-law-108-188-December-17-2003.pdf}}</ref> In 2024, the COFA was amended again to renew aid the freely associated nations as well as Guam and other U.S. Pacific territories.<ref>{{Cite act | title = Consolidated Appropriations Act, 2024 | year = 2024 | url = https://www.congress.gov/118/plaws/publ42/PLAW-118publ42.pdf}}</ref>
]


=== Military bases ===
== Transportation and communications==
]
{{main|Communications in Guam|Transportation in Guam}}
] maintains jurisdiction over installations, which cover approximately {{convert|39000|acre|ha}}, or 29% of the island's total land area. These include:
Most of the island has mobile phone service and high speed internet is now widely available through cable or ]. Cell phones are used by a majority of residents, and the telephone service is extremely reliable, as compared to 20-25 years ago when phone outages were common. Guam was added to the North American Numbering Plan in ], removing the barrier of high cost international long-distance calls to the U.S. Mainland.
* U.S. ], ] (Santa Rita), comprising the ], additional lands, and with jurisdiction of the majority of ]
* ], ] (Yigo), including ]
* ], ] (Dededo)
* ], U.S. Navy – South Central Highlands (formerly known as Naval Magazine)
* ], U.S. Navy (Dededo), sometimes referred to "NCTS Finegayan"
* ] (Barrigada), often referred to as "Radio Barrigada"
* ] Headquarters (Asan), at ]
* ] (Agana Heights)
* South Finegayan (Dededo), a military housing complex
* Andersen South (Yigo), formerly Marine Barracks Guam until its closure in 1992
* Fort Juan Muña, ] (Tamuning)


In 2010, the U.S. military proposed building a new aircraft carrier berth on Guam and moving 8,600 Marines, and 9,000 of their dependents, to Guam from ], Japan. Including the required construction workers, this buildup would increase Guam's population by a total of 79,000, a 49% increase over its 2010 population of 160,000. In a February 2010 letter, the ] sharply criticized these plans because of a water shortfall, sewage problems and the impact on coral reefs.<ref>{{cite news|last=McAvoy|first=Audrey|title=EPA sharply criticizes military's Guam plan|work=]|access-date=December 28, 2010|date=February 25, 2010|url=http://www.boston.com/news/nation/articles/2010/02/25/epa_sharply_criticizes_militarys_guam_plan/|url-status=live|archive-url=https://web.archive.org/web/20110512013841/http://www.boston.com/news/nation/articles/2010/02/25/epa_sharply_criticizes_militarys_guam_plan/|archive-date=May 12, 2011}}</ref> As of 2022, the Marine Corps has decided to place 5,000 Marines on the island within the first half of the 2020s, with 1,300 already stationed on the base.<ref>{{Cite web |title=Marine Corps activates Camp Blaz in Guam |url=https://www.marines.mil/News/News-Display/Article/2367980/marine-corps-activates-camp-blaz-in-guam/ |access-date=March 8, 2022 |website=United States Marine Corps Flagship |language=en-US |archive-date=March 8, 2022 |archive-url=https://web.archive.org/web/20220308222412/https://www.marines.mil/News/News-Display/Article/2367980/marine-corps-activates-camp-blaz-in-guam/ |url-status=live }}</ref>
As Guam is also part of the U.S. Postal System (the postal code is ]), mail to Guam from the mainland is considered domestic and no additional charges are required. Private shipping companies such as UPS, DHL or FedEx also regard Guam as domestic, although this is often not reflected in the shipping charges of many mail-order companies or websites. Mail takes approximately 1-2 weeks to travel between Guam and California. Express mail and Fedex takes a minimum of three to four days to reach the U.S. Most residents use post office boxes, though home delivery is becoming increasingly available.


==Government and politics==
Guam is served by the ]. There are no direct flights to Guam from the ]. Flights to Guam go through Hawaii, Japan, or Korea first and generally requires a layover and a plane transfer. To fly to Guam from the mainland, through Hawaii, requires a five-hour flight from San Francisco or Los Angeles, and another 7.5-hour flight from Hawaii to Guam. To fly to Guam from the mainland, through Japan or Korea, requires a 10-12-hour flight from the mainland to Korea or Japan, and another 3-4-hour flight to Guam. There are two direct flights a day to Manila, Philippines.
]]]
{{See also|Politics of Guam|Voting in Guam|Political party strength in Guam}}
Guam is governed by a popularly elected ] and a ] 15-member ], whose members are known as senators. Its judiciary is overseen by the ].


The ] is the court of United States federal jurisdiction in the territory. Guam elects one ], currently Republican ]. The delegate does not have a vote on the final passage of legislation, but is accorded a vote in committee, and the privilege to speak to the House.<ref name="Rogers2"/>
Most residents travel in Guam using personally owned vehicles. A limited bus system for residents exists but is relatively unused.


U.S. citizens in Guam vote in a ] for their choice in the U.S. presidential general election, but since Guam has no votes in the ], the poll has no real effect. However, in sending delegates to the Republican and Democratic national conventions, Guam does have influence in the national presidential race. These delegates are elected by local party ].<ref name="Rogers2"/>
==Ecological issues==
===The brown tree snake===
]
This island also exemplifies the effects of ]: thought to be a ] on a U.S. military transport near the end of World War II, the slightly venomous, but rather harmless, ] (''Boiga irregularis'') came to Guam and killed a large percentage of the native bird population on the previously snake-free island. This snake has no natural predators on the island. Although some studies have suggested a high density of the brown tree snake, residents rarely see these snakes. Prodigious climbers, the snakes were blamed for frequent blackouts in the 1980's by shorting across lines and transformers. Many power poles now have a slick metal sheath to prevent the snakes from climbing, and such blackouts are now rare.{{Facts|date=February 2007}}


===Political status===
Many Guam residents feel that nationwide publicity concerning the brown tree snake and references to this species "hanging on trees like spaghetti" has caused much misinformation concerning the actual extent of the problem. While most residents acknowledge that the brown tree snake is somewhat of problem, they don't feel that it is to the extent portrayed by shows such as ABC's '']'' in the 1990s.{{Facts|date=February 2007}}
] is the ] for ].]]
In the 1980s and early 1990s, there was a significant movement in favor of this U.S. territory becoming a ], which would give it a level of self-government similar to ] and the ].<ref name="Americans, Almost and Forgotten"/> In a 1982 ], voters indicated interest in seeking commonwealth status.<ref>{{Cite news|url=http://www.un.org/en/decolonization/pdf/crp_2012_guam.pdf|title=Statement of the Non-Self Governing Territory of Guam to the Pacific Regional Seminar on the implementation of the third decade for the eradication of colonialism: current realities and prospects in Quito, Ecuador|last=Natividad|first=Lisalinda|date=May 30, 2012|work=United Nations|access-date=February 21, 2019|archive-url=https://web.archive.org/web/20190412031009/https://www.un.org/en/decolonization/pdf/crp_2012_guam.pdf|archive-date=April 12, 2019|url-status=live}}</ref> However, the federal government rejected the version of a commonwealth that the government of Guam proposed, because its clauses were incompatible with the ] (Art. IV, Sec. 3, cl. 2) of the ].{{citation needed|date=August 2023}}{{when|date=August 2023}} Other movements advocate U.S. statehood for Guam, union with the state of Hawaii, or union with the Northern Mariana Islands as a single territory, or independence.<ref name="Guampedia-2016">{{cite web|url=http://www.guampedia.com/commission-on-decolonization|title=Commission on Decolonization 2014|author=<!--Not stated-->|date=December 3, 2016|website=Guampedia|access-date=February 27, 2017|url-status=live|archive-url=https://web.archive.org/web/20170228163623/http://www.guampedia.com/commission-on-decolonization/|archive-date=February 28, 2017}}</ref>


The first Guam Constitutional Convention was funded by the 10th Guam Legislature and met from June 1, 1969, through June 29, 1970, with 43 elected delegates. The second Guam Constitutional Convention was convened on July 1, 1977, to create a constitution for Guam that would redefine the island's relationship with the US rather than merely modifying the existing relationship. The convention met periodically through October 31, 1977. Although approved at the federal level, the people of Guam overwhelmingly rejected the Constitution in a referendum held in August 1979, with 82% opposed. No new convention has been held pursuant to US congressional authority since 1979.<ref>{{Cite web|url=https://www.guampedia.com/guam-constitutional-conventions-concon/|title=Guam Constitutional Conventions (ConCon) - Guampedia|date=August 27, 2013|website=www.guampedia.com}}</ref>
===Other invasive animal species===
].]]
From the seventeenth through nineteenth centuries, the Spanish introduced pigs, dogs, chickens, the Philippine deer (Cervus mariannus), ]s, and ]. Water buffalo, known as ] locally, have cultural significance. Herds of these animals obstruct military base operations and harm native ecosystems. After birth control and adoption efforts were ineffective, the U.S. military began euthanizing the herds leading to organized protests from island residents.


A Commission on ] was established in 1997 to educate the people of Guam about the various political status options in its relationship with the U.S.: statehood, free association, and independence. The island has been considering another non-binding plebiscite on decolonization since 1998. The group was dormant for some years. In 2013, the commission began seeking funding to start a public education campaign. There were few subsequent developments until late 2016. In early December 2016, the Commission scheduled a series of education sessions in various villages about the current status of Guam's relationship with the U.S. and the self-determination options that might be considered.<ref name="Raymundo">{{cite news |url=http://www.guampdn.com/story/news/2016/12/07/commission-launch-series-decolonization-meetings/95076830/ |title=Commission to launch series of decolonization meetings |last=Raymundo |first=Shawn |date=December 8, 2016 |newspaper=Pacific Daily News |access-date=February 27, 2017}}</ref> The commission's current executive director is Edward Alvarez and there are ten members. The group is expected to release position papers on independence and statehood but the contents have not yet been completed.<ref name="Guampedia-2016"/>
Other introduced species include ] imported in 1937, the giant African Snail&mdash;an agricultural pest introduced during WWII&mdash;and more recently frog species which could threaten crops in addition to providing additional food for the brown tree snake population. Reports of loud chirping frogs that may have arrived from Hawaii have led to fears that the noise could even threaten Guam's tourism. Introduced feral pigs and deer, over-hunting, and habitat loss from human development are also major factors in the decline and loss of Guam's native plants and animals.


The ] is in favor of greater self-determination for Guam and other such territories. The UN's ] has agreed to endorse the Governor's education plan. The commission's May 2016 report states: "With academics from the University of Guam, was working to create and approve educational materials. The Office of the Governor was collaborating closely with the Commission" in developing educational materials for the public.<ref>{{cite web|url=https://www.un.org/press/en/2016/gacol3290.doc.htm|title=Secretary-General Urges Concrete Action to Advance Decolonization Agenda as Pacific Regional Seminar Convenes|author=<!--Not stated-->|date=May 31, 2016|website=United Nations|access-date=February 27, 2017|quote="Let us seize this opportunity to identify concrete actions to advance the decolonization agenda," Mr. Ban said ... according to the United Nations Charter and relevant General Assembly resolutions, a full measure of self-government could be achieved through independence, integration or free association with another State. The choice should be the result of the freely expressed will and desire of the peoples of the Non-Self-Governing Territories.|url-status=live|archive-url=https://web.archive.org/web/20170228082817/http://www.un.org/press/en/2016/gacol3290.doc.htm|archive-date=February 28, 2017}}</ref>
===Threats to indigenous plants===
Invading animal species are not the only threat to Guam's native flora. Tinangaja, a ] affecting coconut palms, was first observed on the island in 1917 when ] production was still a major part of Guam's economy. Though coconut plantations no longer exist on the island, the dead and infected trees that have resulted from the epidemic are seen throughout the forests of Guam. Also during the past century, the dense forests of northern Guam have been largely replaced by thick tangan tangan brush (]-native to the Americas). Much of Guam's folliage was lost during ]. In 1947, the U.S. military introduced tangan tangan by seeding the island from the air to prevent ]. In southern Guam, non-native grass species also dominate much of the landscape.


The ] approved a $300,000 grant for decolonization education, Edward Alvarez told the United Nations Pacific Regional Seminar in May 2016. "We are hopeful that this might indicate a shift in policy to its Non-Self-Governing Territories such as Guam, where they will be more willing to engage in discussions about our future and offer true support to help push us towards true self-governances and self-determination."<ref>{{cite web|url=https://www.un.org/press/en/2016/gacol3290.doc.htm|title=Secretary-General Urges Concrete Action to Advance Decolonization Agenda as Pacific Regional Seminar Convenes|author=<!--Not stated-->|date=May 31, 2016|website=United Nations|access-date=February 27, 2017|url-status=live|archive-url=https://web.archive.org/web/20170228082817/http://www.un.org/press/en/2016/gacol3290.doc.htm|archive-date=February 28, 2017}}</ref>
]


On July 31, 2020, the ] joined the ] (UNPO).<ref name=unpowelcomes5newmembers>{{Cite web |title=UNPO Welcomes 5 New Members! |work=unpo.org |date=August 3, 2020 |access-date=August 7, 2020 |url=https://unpo.org/article/22010 |archive-date=August 6, 2020 |archive-url=https://web.archive.org/web/20200806201317/https://unpo.org/article/22010 |url-status=live }}</ref><ref name=guam>{{Cite web |title=Guam: Territory to be Inducted into UNPO |work=unpo.org |date=July 31, 2020 |access-date=August 7, 2020 |url=https://unpo.org/article/22015 |archive-date=August 9, 2020 |archive-url=https://web.archive.org/web/20200809004427/https://unpo.org/article/22015 |url-status=live }}</ref>
===Wildfires===
]s plague the forested ("boonie" or "jungle") areas of Guam every ] despite the island's humid climate. Most fires are man-caused with 80 percent resulting from ].<ref> , Pgs. 6-7</ref> ] often start fires to attract deer to the new growth. Invasive grass species that rely on fire as part of their natural life cycle grow in many regularly burned areas. ]s and "barrens" have replaced previously forested areas leading to greater soil ]. During the ] sediment is carried by the heavy rains into the ] Reservoir and ] leading to water quality problems for southern Guam. Eroded silt also destroys the marine life in reefs around the island. Soil stabilization efforts by volunteers and forestry workers to plant trees have had little success in preserving natural habitats.


Its ] has been a matter of significant discussion, with public opinion polls indicating a strong preference of becoming a ].<ref name="KUAM-2016" /><ref name="Freymann-2020" />
===Aquatic preserves===
As a vacation spot for ]s, efforts have been made to protect Guam's coral reef habitats from ], eroded ], and ] that have led to decreased fish populations. In recent years the Department of Agriculture, Division of Aquatic and Wildlife Resources has established several new marine preserves where fish populations are monitored by biologists. A federal Guam National Wildlife Refuge in northern Guam protects the decimated ] population in addition to a small colony of ].


===Villages===
<center><gallery>
] from the Spanish-built ]]]
Image:Whitespotted boxfish Ostracion meleagris photo Randall J E.jpg
{{Main|Villages of Guam}}
Image:Royal angelfish Pygoplites diacanthus photo Patzner R.jpg
{{see also|List of census-designated places in Guam}}
Image:Pete's Reef 008.jpg
Guam is divided into 19 municipal villages:
{{div col|colwidth=16em}}
* ]
* ]
* ]
* ]
* ]
* ]
* ]
* ]
* ]
* ]
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{{div end}}


==Transportation and communications==
</gallery>Reef fish of Guam.</center>
{{Main|Communications in Guam|Transportation in Guam}}
]
Most of the island has state-of-the-art mobile phone services and high-speed internet widely available through either cable or ]. Guam was added to the ] (NANP) in 1997. The country code 671 became NANP ].<ref>{{cite web|url=http://www.nanpa.com/pdf_previous/08_02_99/pl_nanp_004.pdf|title=PL-NANP-004|author=J. N. Deak|date=August 5, 1996|publisher=North American Numbering Plan Administration|access-date=October 12, 2010|url-status=live|archive-url=https://web.archive.org/web/20101126175014/http://nanpa.com/pdf_previous/08_02_99/pl_nanp_004.pdf|archive-date=November 26, 2010}}</ref> This removed the barrier of high-cost international long-distance calls to the ].

Guam is a major hub for ] between the Western U.S., Hawaii, Australia and Asia. Guam currently serves twelve submarine cables, with most continuing to China. In 2012 '']'' stated that the island has "tremendous bandwidth" and internet prices comparable to those of the U.S. Mainland due to being at the junction of undersea cables.<ref>{{cite web|author=Calabrese, Michael|author2=Daniel Calarco|author3=Colin Richardson|url=https://slate.com/technology/2012/05/internet-access-and-cost-in-american-samoa-northern-marianas-islands-guam.html|title=The Most Expensive Internet in America|work=]|date=May 24, 2012|access-date=January 6, 2020|archive-date=December 18, 2019|archive-url=https://web.archive.org/web/20191218143415/https://slate.com/technology/2012/05/internet-access-and-cost-in-american-samoa-northern-marianas-islands-guam.html|url-status=live}}</ref>

In 1899, the local postage stamps were overprinted "Guam" as was done for the other former Spanish colonies, but this was discontinued shortly thereafter and regular U.S. postage stamps have been used ever since. Guam is part of the U.S. Postal System (]: GU, ]: 96910–96932). Mail to Guam from the U.S. mainland is considered domestic and no additional charges are required. Private shipping companies, such as FedEx, UPS, and DHL, however, have no obligation to do so, and do not regard Guam as domestic.

The speed of mail traveling between Guam and the states varies depending on size and time of year. Light, first-class items generally take less than a week to or from the mainland. Larger first-class or Priority items can take a week or two. Fourth-class mail, such as magazines, are transported by sea after reaching Hawaii. Most residents use post office boxes or private mail boxes, although residential delivery is becoming increasingly available.

], 2014]]
The ] is the island's lifeline, because most products must be shipped into Guam for consumers. It receives the weekly calls of the Hawaii-based shipping line ] whose container ships connect Guam with Honolulu, Hawaii; Los Angeles, California; Oakland, California; and Seattle, Washington. The port is also the regional transhipment hub for over 500,000 customers throughout the Micronesian region. The port is the shipping and receiving point for containers designated for the island's U.S. Department of Defense installations, Andersen Air Force Base and Commander, Naval Forces Marianas and eventually the Third Marine Expeditionary Force.

Guam is served by the ]. The island is outside the United States customs zone,<ref> {{Webarchive|url=https://web.archive.org/web/20180731062243/https://www.govinfo.gov/content/pkg/USCODE-2016-title19/html/USCODE-2016-title19-chap4-subtitleIII-partI-subparta-sec1401.htm|date=July 31, 2018}} .</ref> so Guam is responsible for establishing and operating its own customs and quarantine agency and jurisdiction.<ref> {{Webarchive|url=https://web.archive.org/web/20180731062149/https://www.govinfo.gov/content/pkg/CFR-2018-title19-vol1/xml/CFR-2018-title19-vol1-sec7-2.xml|date=July 31, 2018}} .</ref>{{hs}}<ref>{{Cite web|url=https://scholar.google.com/scholar_case?case=9438365734100701234|title=People of Territory of Guam v. Sugiyama, 846 F. 2d 570 – Court of Appeals, 9th Circuit 1988 – Google Scholar|access-date=November 18, 2019|archive-date=September 21, 2020|archive-url=https://web.archive.org/web/20200921093928/https://scholar.google.com/scholar_case?case=9438365734100701234|url-status=live}}</ref><ref>{{Cite web|url=https://scholar.google.com/scholar_case?case=10182869947278559413|title=People of Territory of Guam v. SUGIYAMA, 859 F. 2d 1428 – Court of Appeals, 9th Circuit 1988 – Google Scholar|access-date=November 18, 2019|archive-date=September 21, 2020|archive-url=https://web.archive.org/web/20200921093938/https://scholar.google.com/scholar_case?case=10182869947278559413|url-status=live}}</ref>{{hs}}<ref> {{Webarchive|url=https://web.archive.org/web/20190412031010/http://www.guamcourts.org/CompilerofLaws/GCA/05gca/5gc073.pdf#page=13|date=April 12, 2019}} .</ref> Therefore, the ] only carries out immigration, but not customs functions. Since Guam is under federal immigration jurisdiction, passengers arriving directly from the United States skip immigration and proceed directly to Guam Customs and Quarantine.

Due to the ] for certain countries, an eligibility pre-clearance check is carried on Guam for flights to the States. For travel from the Northern Mariana Islands to Guam, a pre-flight passport and visa check is performed before boarding the flight to Guam. On flights from Guam to the Northern ], no immigration check is performed. Traveling between Guam and the States through a foreign point requires a passport.

Most residents travel within Guam using personally owned vehicles. The ] provides fixed route bus and paratransit services, and some commercial companies operate buses between tourist-frequented locations.


==Education== ==Education==
{{See also|List of schools in Guam}}
].<hr/>
], built in 1933, was the first library in southern Guam.]]
<span style="color:black">This image has an uncertain copyright status and is pending deletion. You can ] on the removal.</span>]]
] operates the Nieves M. Flores Memorial Library in ] and five branch libraries.<ref>{{cite web|url=http://www.opaguam.org/sites/default/files/CITIZEN-CENTRIC%20REPORT%20FY2011_0.pdf|title=Guam Public Library System – A Report To Our Citizens|access-date=September 25, 2008|url-status=live|archive-url=https://web.archive.org/web/20170918022432/http://www.opaguam.org/sites/default/files/CITIZEN-CENTRIC%20REPORT%20FY2011_0.pdf|archive-date=September 18, 2017}}</ref>
===Primary and secondary schools===
{{seealso|List of Guam schools}}
The ] serves the entire island of Guam. In 2000, 32,000 students attended Guam's public schools. Guam's public school system has been criticized for having poor management and inadequate facilities. Lack of funding and corruption are often cited as the causes. Recent losses in federal funding may lead to further problems. ]s had a total attendance of 6,000 in 2000, though attendance has increased in recent years.


The ] serves the entire island of Guam. In 2000, 32,000 students attended Guam's public schools, including 26 elementary schools, eight middle schools, and six high schools and alternative schools. Guam Public Schools have struggled with problems such as high dropout rates and poor test scores.<ref name=Merrow>{{cite web|url=https://www.pbs.org/merrow/tv/ftw/intro.html|title=Merrow Report: First to Worst|website=]|access-date=November 8, 2007|archive-url=https://web.archive.org/web/20070810064606/https://www.pbs.org/merrow/tv/ftw/intro.html|archive-date=August 10, 2007}}</ref><ref name=State>{{cite web|url=http://www.nagb.org/pubs/1996science/stat_tbl.html#tab10|year=1996|title=State Comparisons|access-date=November 8, 2007|archive-url=https://web.archive.org/web/20070713093749/http://www.nagb.org/pubs/1996science/stat_tbl.html#tab10|archive-date=July 13, 2007|url-status=live}}</ref>
In 1998, because of the very poor quality of Guam's school system, the ] opened schools for children of American military personnel. ] schools had an attendance of 2,500 in 2000. The schools are Andersen Elementary School, ], McCool Elementary/Middle School, and ].


Guam's educational system has always faced unique challenges as a small community located {{convert|6000|mi|km}} from the U.S. mainland with a very diverse student body including many students who come from backgrounds without traditional American education.<ref name=Peabody>{{cite journal|last=Grace|first=Ted|author2=Teresita Salos|title=Guam's Education Marches On|journal=Peabody Journal of Education|volume=44|issue=1|pages=37–39|year=1966|doi=10.1080/01619566609537383}}</ref> An economic downturn in Guam since the mid-1990s has compounded the problems in schools.<ref name="Guam Legislature">{{cite web|url=http://www.guamlegislature.com/25th_Guam_Legislature/Bills_Introduced_25th/Bill%20No.%20089.html|archive-url=https://web.archive.org/web/20071214003451/http://www.guamlegislature.com/25th_Guam_Legislature/Bills_Introduced_25th/Bill%20No.%20089.html|url-status=dead|archive-date=December 14, 2007|year=1999|title=An act to establish a guam parental school choice program|access-date=November 8, 2007}}</ref>
===Colleges and universities===

The ], ], and ] offer courses in higher education.
Before September 1997, the ] partnered with the Guam Board of Education.<ref>" {{Webarchive|url=https://web.archive.org/web/20120119144600/http://www.newspaperarchive.com/LandingPage.aspx?type=glp&search=%22rats%2c%20other%20problems%20face%20guam%20schools%22&img=%5C%5Cna0041%5C6800243%5C56035875_clean.html|date=January 19, 2012}}." '']''. October 3, 1993.</ref> In September 1997, the ] (DoDEA) opened its own schools for children of military personnel.<ref>. SpaceRef (August 21, 2003). Retrieved June 13, 2012.</ref> DoDEA schools, which also serve children of some federal civilian employees, had an attendance of 2,500 in 2000. DoDEA Guam operates three elementary/middle schools and ].<ref name=DODEA>{{cite web|url=http://www.pac.dodea.edu/aboutus/contacts/ContactSchools.htm|title=District and School Contact Information|work=pac.dodea.edu|access-date=May 10, 2006|url-status=dead|archive-url=https://web.archive.org/web/20060509143001/http://www.pac.dodea.edu/aboutus/contacts/ContactSchools.htm|archive-date=May 9, 2006}}</ref>

The ] (UOG) and ], both fully accredited by the ], offer courses in higher education.<ref>{{cite web|url=http://archives.pireport.org/archive/2006/june/06%2D15%2Ded.htm|date=June 15, 2006|work=Pacific Islands Report|title=Politics Trumps Performance in Guam School System|access-date=June 16, 2007|url-status=dead|archive-url=https://web.archive.org/web/20071006101300/http://archives.pireport.org/archive/2006/june/06-15-ed.htm|archive-date=October 6, 2007}}</ref> UOG is a member of the exclusive group of only 106 ] in the entire United States. ] is a small Christian liberal arts institution, nationally accredited by the ].

==Health care==
{{further|2020 coronavirus pandemic in Guam}}
The Government of Guam maintains the island's main health care facility, ], in ].<ref> {{webarchive|url=https://web.archive.org/web/20091124011002/http://www.gmha.org/|date=November 24, 2009}}. Gmha.org. Retrieved June 13, 2012.</ref> U.S. board certified doctors and dentists practice in all specialties. The ] in ] serves active-duty members and dependents of the military community.<ref> {{webarchive|url=https://web.archive.org/web/20120617152539/http://www.med.navy.mil/SITES/USNHGUAM/Pages/default.aspx|date=June 17, 2012}}. United States Navy</ref>

There is one subscriber-based ] located on the island, CareJet, which provides emergency patient transportation across Guam and surrounding islands.<ref>{{cite web|url=http://airmedical.net/2012/09/10/guams-carejet-program-resumes-service/|title=Guam's CareJet Program Resumes Service|work=Air Medical Net|date=September 10, 2012|access-date=April 21, 2016|url-status=live|archive-url=https://web.archive.org/web/20160405092209/http://airmedical.net/2012/09/10/guams-carejet-program-resumes-service/|archive-date=April 5, 2016}}</ref> A private hospital, the ], opened in early 2016.<ref name="GRMC">{{cite news |last=Sablan |first=Jerick |url=http://www.guampdn.com/story/entertainment/2015/12/31/no-5-guam-regional-medical-city-opens/77077524/ |archive-url=https://wayback.archive-it.org/all/20170525021925/http://www.guampdn.com/story/entertainment/2015/12/31/no-5-guam-regional-medical-city-opens/77077524/ |url-status=dead |archive-date=May 25, 2017 |title=No. 5: Guam Regional Medical City opens |date=January 4, 2016 |work=Pacific Daily News |access-date=April 21, 2016 }}</ref> Medicaid is accepted in Guam.<ref>{{Cite web|url=https://www.medicaid.gov/state-overviews/guam.html|title=Guam &#124; Medicaid|website=www.medicaid.gov|access-date=October 9, 2021|archive-date=October 9, 2021|archive-url=https://web.archive.org/web/20211009232016/https://www.medicaid.gov/state-overviews/guam.html|url-status=live}}</ref>


==See also== ==See also==
{{portal|History||Islands|Oceania|United States|<!-- Guam -->}}
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==Notes==
{{notelist}}


==References== ==References==
{{reflist}}
*

===Works cited===
* {{cite book |last1=Cunningham |first1=Lawrence J. |last2=Beaty |first2=Janice J. |title=A History of Guam |url=https://books.google.com/books?id=ZsZP537hdbIC |date=January 1, 2001 |publisher=Bess Press |isbn=978-1-57306-068-4}}
* {{cite book |last=Safford |first=William Edwin |title=Guam, an Account of Its Discovery and Reduction, Physical Geography and Natural History: And the Social and Economic Conditions on the Island During the First Year of the American Occupation |url=https://books.google.com/books?id=aIoKAQAAIAAJ&pg=PA9 |edition=Public domain |year=1912 |publisher=General Books}}
* {{cite book |last1=Wuerch |first1=William L. |last2=Ballendorf |first2=Dirk Anthony |title=Historical Dictionary of Guam and Micronesia |url=https://books.google.com/books?id=h5EE-AVNT98C&pg=PA44 |date=January 1, 1994 |publisher=Scarecrow Press |isbn=978-0-8108-2858-2}}

===Further reading===
* {{cite book |last=Maga |first=Timothy P. |title=Defending Paradise: The United States and Guam, 1898–1950 |publisher=Garland |year=1988}}
* {{cite book |last=Rogers |first=Robert F. |title=Destiny's Landfall: A History of Guam |publisher=University of Hawaii Press |year=1995}}
* {{cite encyclopedia |last=Spear |first=Jane E. |title=Guamanian Americans |encyclopedia=Gale Encyclopedia of Multicultural America |editor-first=Thomas |editor-last=Riggs |edition=3rd |volume=2 |publisher=Gale |year=2014 |pages=263–273 |url=https://link.gale.com/apps/doc/CX3273300082/GPS?u=wikipedia&sid=GPS&xid=52d93d45}}


==External links== ==External links==
{{Sister project links|Guam|voy=Guam|n=Category:Guam|d=Q16635|q=no|b=no|v=no|s=Portal:Guam}}
{{sisterlinks|Guam}}
* {{official website|http://www.guam.gov/}}
'''Government'''
* – Guam's online Encyclopedia
*
* , fosters the Chamorro language, culture, and traditions
*
* , PBS documentary film website.
*
* . '']''. ].
*
*
*
*
'''News'''
* from the U.S. ]. {{Webarchive|url=https://web.archive.org/web/20100814101722/http://www.loc.gov/rr/international/hispanic/guam/guam.html |date=August 14, 2010 }}
*
* {{wikiatlas|Guam}}
*
* {{osmrelation-inline|306001}}{{Clear}}
*
* ({{Webarchive|url=https://web.archive.org/web/20221005014825/https://bsp.guam.gov/census-of-guam/ |date=October 5, 2022 }})
'''Overviews'''
* from the Guam Humanities Council and the University of Guam
* directory category
*
*
*
'''Military'''
*
*
*
*
*
*
'''Tourism'''
*
*
* from Unearth Travel - creative commons travel wiki
'''Other'''
*
*
*
*
*
*
*
*
*
* How the arrival of one invasive species damaged the ecology, commerce, electrical systems, and human health on Guam: A comprehensive information source.
*
*
*


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Latest revision as of 23:28, 7 January 2025

U.S. territory in the Pacific Ocean This article is about the U.S. territory. For the international organization, see GUAM.

Unincorporated and organized U.S. territory in the United States
GuamGuåhan (Chamorro)
Unincorporated and organized U.S. territory
Flag of Guam
FlagOfficial seal of Guam
Seal
Nickname(s): "Tånó y Chamoru" (Chamorro) (English: "Land of the Chamorro")
Motto: "Tånó I' Man Chamoru" (Chamorro)
(English: "Land of the Chamorros")
Anthem: "Stand Ye Guamanians" (regional)

"The Star-Spangled Banner" (official)
Location of GuamLocation of Guam (circled in red)
Sovereign state United States
Before annexationSpanish East Indies
Cession from SpainDecember 10, 1898
CapitalHagåtña
Largest cityDededo
Official languages
Ethnic groups (2010)
Religion (2010)
Demonym(s)Guamanian
GovernmentDevolved presidential dependency within a federal republic
• President Joe Biden (D)
• Governor Lou Leon Guerrero (D)
• Lieutenant Governor Josh Tenorio (D)
LegislatureLegislature of Guam
United States Congress
• House delegateJames Moylan (R)
Area
• Total210 sq mi (540 km)
Highest elevation1,334 ft (407 m)
Population
• 2021 estimate168,801 (177th)
• Density299/km (774.4/sq mi)
GDP (PPP)2016 estimate
• Total$5.8 billion
• Per capita$35,600
GDP (nominal)2019 estimate
• Total$6.3 billion
• Per capita$37,387
HDI (2017)Increase 0.901
very high
CurrencyUnited States dollar (US$) (USD)
Time zoneUTC+10:00 (ChST)
Date formatmm/dd/yyyy
Driving sideRight
Calling code+1-671
USPS abbreviationGU
ISO 3166 code
Internet TLD.gu

Guam (/ˈɡwɑːm/ GWAHM; Chamorro: Guåhan [ˈɡʷɑhɑn]) is an organized, unincorporated territory of the United States in the Micronesia subregion of the western Pacific Ocean. Guam's capital is Hagåtña, and the most populous village is Dededo. It is the westernmost point and territory of the United States, reckoned from the geographic center of the U.S. In Oceania, Guam is the largest and southernmost of the Mariana Islands and the largest island in Micronesia. As of 2022, its population was 168,801. Chamorros are its largest ethnic group, but a minority on the multiethnic island. The territory spans 210 square miles (540 km; 130,000 acres) and has a population density of 775 per square mile (299/km).

Indigenous Guamanians are the Chamorro, who are related to the Austronesian peoples of the Malay Archipelago, the Philippines, Taiwan, and Polynesia. But unlike most of its neighbors, the Chamorro language is not classified as a Micronesian or Polynesian language. Rather, like Palauan, it possibly constitutes an independent branch of the Malayo-Polynesian language family. The Chamorro people settled Guam and the Mariana islands approximately 3,500 years ago. Portuguese explorer Ferdinand Magellan, while in the service of Spain, was the first European to visit and claim the island on March 6, 1521. Guam was fully colonized by Spain in 1668. Between the 16th and 18th centuries, Guam was an important stopover for Spanish Manila galleons. During the Spanish–American War, the United States captured Guam on June 21, 1898. Under the 1898 Treaty of Paris, Spain ceded Guam to the U.S. effective April 11, 1899.

Before World War II, Guam was one of five American jurisdictions in the Pacific Ocean, along with Wake Island in Micronesia, American Samoa and Hawaii in Polynesia, and the Philippines. On December 8, 1941, hours after the attack on Pearl Harbor, Guam was captured by the Japanese, who occupied the island for two and a half years before American forces recaptured it on July 21, 1944, which is commemorated there as Liberation Day. Since the 1960s, Guam's economy has been supported primarily by tourism and the U.S. military, for which Guam is a major strategic asset. Its future political status has been a matter of significant discussion, with public opinion polls indicating a strong preference for American statehood.

Guam's de facto motto is "Where America's Day Begins", which refers to the island's proximity to the International Date Line. Guam is among the 17 non-self-governing territories listed by the United Nations, and has been a member of the Pacific Community since 1983.

Guam is called Guåhan by Chamorro speakers, from the word guaha, meaning 'to have'; its English gloss 'we have' references the island's providing everything needed to live.

History

Main article: History of Guam

Pre-Contact era

Main article: Mariana Islands § Prehistory
A map showing the Neolithic Austronesian migrations into the islands of the Indo-Pacific

Guam, along with the other Mariana Islands, were the first islands settled by humans in Remote Oceania. It was also the first and the longest of the ocean-crossing voyages of the Austronesian peoples, and is separate from the later Polynesian settlement of the rest of Remote Oceania. They were first settled around 1500 to 1400 BC, by migrants departing from the Philippines which was followed by a second migration from the Caroline Islands in the first millennium AD. A third migration wave took place from Island Southeast Asia, likely the Philippines or eastern Indonesia, by 900 AD.

These original settlers of Guam and the Northern Mariana Islands evolved into the Chamorro people, historically known as Chamorros after first contact with the Spaniards. The ancient Chamorro society had four classes: chamorri (chiefs), matua (upper class), achaot (middle class), and mana'chang (lower class). The matua were located in the coastal villages, which meant they had the best access to fishing grounds. The mana'chang were located in the island's interior. Matua and mana'chang rarely communicated with each other. The matua often used achaot as intermediaries.

There were also "makåhna" or "kakahna", shamans with magical powers and "'suruhånu" or "suruhåna", healers who used different kinds of plants and natural materials to make medicine. Belief in spirits of ancient Chamorros called "Taotao mo'na" still persists as a remnant of pre-European culture. It is believed that "suruhånu" or "suruhåna" are the only ones who can safely harvest plants and other natural materials from their homes or "hålomtåno" without incurring the wrath of the "Taotao mo'na." Their society was organized along matrilineal clans.

The Chamorro people raised colonnades of megalithic capped pillars called latte stones upon which they built their homes. Latte stones are stone pillars that are found only in the Mariana Islands. They are a recent development in Pre-Contact Chamorro society. The latte-stone was used as a foundation on which thatched huts were built. Latte stones consist of a base shaped from limestone called the haligi and with a capstone, or tåsa, made either from a large brain coral or limestone, placed on top. A possible source for these stones, the Rota Latte Stone Quarry, was discovered in 1925 on Rota.

Spanish era

Further information: Spanish–Chamorro Wars
Reception of the Manila Galleon by the Chamorro in the Ladrones Islands, c. 1590 Boxer Codex

The first European to travel to Guam was Portuguese navigator Ferdinand Magellan, sailing for the King of Spain, when he sighted the island on March 6, 1521, during his fleet's circumnavigation of the globe. Despite Magellan's visit, Guam was not officially claimed by Spain until January 26, 1565, by Miguel López de Legazpi. From 1565 to 1815, Guam and the Northern Mariana Islands, the only Spanish outposts in the Pacific Ocean east of the Philippines, were reprovisioning stops for the Manila galleons, a fleet that covered the Pacific trade route between Acapulco and Manila.

Spanish colonization commenced on June 15, 1668, with the arrival of a mission led by Diego Luis de San Vitores, who established the first Catholic church. The islands were part of the Spanish East Indies, and part of the Viceroyalty of New Spain, based in Mexico City. The Spanish-Chamorro Wars on Guam began in 1670 over growing tensions with the Jesuit mission, with the last large-scale uprising in 1683.

Intermittent warfare, plus the typhoons of 1671 and 1693, and in particular the smallpox epidemic of 1688, reduced the Chamorro population from 50,000 to 10,000, and finally to less than 5,000. Up until the late 19th century, Guam was encountered by adventurers and pirates, including Thomas Cavendish, Olivier van Noort, John Eaton, William Dampier, Woodes Rogers, John Clipperton, George Shelvocke and William "Bully" Hayes.

The island became a rest stop for whalers starting in 1823. A devastating typhoon struck the island on August 10, 1848, followed by a severe earthquake on January 25, 1849, which resulted in many refugees from the Caroline Islands, victims of a resultant tsunami. This earthquake was much more powerful than the 8.2 one that occurred on August 8, 1993. After a smallpox epidemic killed 3,644 Guamanians in 1856, Carolinians and Japanese were permitted to settle in the Marianas.

American era

This section needs expansion with: info re the period between the December 10, 1898, cession to the U.S. and WW-I. See e.g., https://www.google.com/books/edition/Destiny_s_Landfall/eh_HDwAAQBAJ?hl=en&gbpv=1&pg=PA102 and elsewhere for info.. You can help by adding to it. (May 2023)
Further information: Capture of Guam
The main street of Hagåtña c. 1899–1900

After almost four centuries as part of the Kingdom of Spain, the United States occupied the island following Spain's defeat in the 1898 Spanish–American War, as part of the Treaty of Paris of 1898. Guam was transferred to the United States Navy control on December 23, 1898, by Executive Order 108-A from 25th President William McKinley.

Guam was a station for American merchants and warships traveling to and from the Philippines, which was another American acquisition from Spain, while the Northern Mariana Islands were sold by Spain to Germany for part of its rapidly expanding German Empire. A U.S. Navy yard was established at Piti in 1899. A United States Marine Corps barracks was established at Sumay in 1901.

A marine seaplane unit was stationed in Sumay from 1921 to 1930, the first in the Pacific. The Commercial Pacific Cable Company built a telegraph/telephone station in 1903 for the first trans-Pacific communications cable, followed by Pan American World Airways establishing a seaplane base at Sumay for its trans-Pacific China Clipper route.

World War I

On December 10, 1914, the SMS Cormoran, a German armed merchant raider, was forced to seek port at Apra Harbor on the U.S. territory of Guam after running short on coal. The United States, which was neutral at the time refused to supply provisions sufficient for the Cormoran to make a German port so the ship and her crew were interned until 1917.

On the morning of April 7, 1917, word reached Guam by telegraph cable that the U.S. Congress had declared war on Germany. The Naval Governor of Guam, Roy Campbell Smith, sent two officers to inform the Cormoran that a state of war existed between the two countries, that the crew were now prisoners of war, and that the ship must be surrendered. Meanwhile, the USS Supply blocked the entrance to Apra Harbor to prevent any attempt to flee. In a separate boat, the two officers were accompanied by a barge commanded by Lt. W.A. Hall, who was designated prize master, and had brought 18 sailors and 15 Marines from the barracks at Sumay.

Seeing a launch from Cormoran hauling a barge of supplies back shore, Hall ordered shots fired across the bow of the launch until it hove to. Meanwhile, the two officers reached Cormoran and informed Captain Adalbert Zuckschwerdt of the situation. Zuckschwerdt agreed to surrender his crew but refused to turn over the ship. The U.S. officers informed Zuckschwerdt that the Cormoran would be treated as an enemy combatant and left to inform Governor Smith of the situation. Unbeknownst to the Americans, the Germans had secreted an explosive device in the ship's coal bunker. Minutes after the Americans left, an explosion aboard Cormoran hurled debris across the harbor and her crew began abandoning ship. The two American boats and USS Supply immediately began to recover German sailors from the water, saving all but seven of the roughly 370 Cormoran crew. This incident, including the warning shots against the launch, accounted for the first violent action of the United States in World War I, first shots fired by the U.S. against Germany in World War I, the first German prisoners of war captured by the U.S., and the first Germans killed in action by the U.S. in World War I.

World War II

U.S. Marines walk through the ruins of Hagåtña, July 1944.

During World War II, the Empire of Japan attacked and invaded in the 1941 Battle of Guam on December 8, at the same time as the attack on Pearl Harbor. The Japanese renamed Guam Ōmiya-jima (Great Shrine Island). The Japanese occupation of Guam lasted about 31 months. During this period, the indigenous people of Guam were subjected to beatings, forced labor, family separation, concentration camps, massacres, beheadings and rape.

During the nearly three years of occupation approximately 1,100 Chamorros were killed, according to later US Congressional committee testimony in 2004. Some historians estimate that war violence killed 10% of Guam's then 20,000 population. The United States returned and fought the 1944 Battle of Guam from July 21 to August 10, to recapture the island. July 21 is now a territorial holiday, Liberation Day.

Post-war

After World War II, the Guam Organic Act of 1950 established Guam as an unincorporated organized territory of the United States, provided for the structure of the island's civilian government, and granted the people U.S. citizenship. The Governor of Guam was federally appointed until 1968 when the Guam Elective Governor Act provided for the office's popular election. Since Guam is not a U.S. state, U.S. citizens residing on Guam are not allowed to vote for president and their congressional representative is a non-voting member.

They do, however, vote for party delegates in presidential primaries. In 1969, a referendum on unification with the Northern Mariana Islands was held and rejected. During the 1970s, Maryly Van Leer Peck started an engineering program, expanded University of Guam, and founded Guam Community College. In the same period, Alby Mangels, Australian adventurer and filmmaker of World Safari visited Guam during his six-year escapade on the leg of his voyage through the Pacific aboard the Klaraborg.

The removal of Guam's security clearance by President John F. Kennedy in 1963 allowed for the development of a tourism industry. When the United States closed U.S. Naval Base Subic Bay and Clark Air Base bases in the Philippines after the expiration of their leases in the early 1990s, many of the forces stationed there were relocated to Guam.

The 1997 Asian financial crisis, which hit Japan particularly hard, severely affected Guam's tourism industry. Military cutbacks in the 1990s also disrupted the island's economy. Economic recovery was further hampered by devastation from super typhoons Paka in 1997 and Pongsona in 2002, as well as the effects of the September 11 terrorist attacks and the crash of Korean Air Flight 801 on tourism.

Geography and environment

Main article: Geography of Guam See also: Geology of Guam
A photograph of Guam from space captured by NASA's now decommissioned Earth observation satellite, Earth Observing-1 (EO-1), December 2011

Guam is 30.17 miles (48.55 kilometers) long and 4 to 12 miles (6 to 19 kilometers) wide. It has an area of 212 square miles (549 square kilometers). It is the 32nd largest island of the United States. It is the southernmost and largest island in the Mariana Islands, as well as the largest in Micronesia. Guam's Point Udall is the westernmost point of the U.S., as measured from the geographic center of the United States.

The Mariana chain, of which Guam is a part, was created by collision of the Pacific and Philippine Sea tectonic plates. Guam is located on the micro Mariana Plate between the two. Guam is the closest land mass to the Mariana Trench, the deep subduction zone that runs east of the Marianas. Volcanic eruptions established the base of the island in the Eocene, roughly 56 to 33.9 million years ago. The north of Guam is a result of this base being covered with layers of coral reef, turning into limestone, and then being thrust upward by tectonic activity to create a plateau.

The rugged south of the island is a result of more recent volcanic activity. Cocos Island off the southern tip of Guam is the largest of the many small islets along the coastline. Guam's highest point is Mount Lamlam at 1,334 feet (407 meters) above sea level. If its base is considered to be the nearby Challenger Deep, the deepest surveyed point in the Oceans, Mount Lamlam is the world's tallest mountain at 37,820 feet (11,530 m).

Politically, Guam is divided into 19 villages. The majority of the population lives on the coralline limestone plateaus of the north, with political and economic activity centered in the central and northern regions. The rugged geography of the south largely limits settlement to rural coastal areas. The western coast is leeward of the trade winds and is the location of Apra Harbor, the capital Hagåtña, and the tourist center of Tumon. The U.S. Defense Department owns about 29% of the island, under the management of Joint Region Marianas.

Climate

Further information: Climate change in Guam and List of typhoons in Guam
Guam National Wildlife Refuge beach at Ritidian Point

Guam has a tropical rainforest climate on the Köppen scale (Köppen Af). Its driest month of March almost qualifies as a tropical monsoon climate (Köppen Am). The weather is generally hot and humid throughout the year with little seasonal temperature variation. Guam is known to have equable temperatures year-round. Trade winds are fairly constant throughout the year. There is often a weak westerly monsoon influence in the summer months.

Guam has two distinct seasons: Wet and dry season. The dry season runs from January through May. June is the transitional period. The wet season runs from July through November. Guam's average annual rainfall was 98 inches or 2,490 millimeters between 1981 and 2010.

The wettest month on record at Guam Airport has been August 1997 with 38.49 inches (977.6 mm). The driest was February 2015 with 0.15 inches (3.8 mm). The wettest calendar year was 1976 with 131.70 inches (3,345.2 mm). The driest year was in 1998 with 57.88 inches (1,470.2 mm). The most rainfall in a single day occurred on October 15, 1953, when 15.48 inches or 393.2 millimeters fell.

The mean high temperature is 86 °F or 30 °C. The mean low is 76 °F (24.4 °C). Temperatures rarely exceed 90 °F (32.2 °C) or fall below 70 °F (21.1 °C). The relative humidity commonly exceeds 84 percent at night throughout the year, but the average monthly humidity hovers near 66 percent.

The highest temperature ever recorded in Guam was 96 °F (35.6 °C) on April 18, 1971, and April 1, 1990. A record low of 69 °F (21 °C) was set on February 1, 2021. The lowest recorded temperature was 65 °F (18.3 °C), set on February 8, 1973.

Guam lies in the path of typhoons and it is common for the island to be threatened by tropical storms and possible typhoons during the wet season. The highest risk of typhoons is from August through November, where typhoons and tropical storms are most probable in the western Pacific. They can, however, occur year-round. Typhoons that have caused major damage on Guam in the American period include the Typhoon of 1900, Karen (1962), Pamela (1976), Paka (1997), Pongsona (2002), and Mawar (2023).

Since Typhoon Pamela in 1976, wooden structures have been largely replaced by concrete structures. During the 1980s, wooden utility poles began to be replaced by typhoon-resistant concrete and steel poles. After the local Government enforced stricter construction codes, many home and business owners have built their structures out of reinforced concrete with installed typhoon shutters.

Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 94
(34)
93
(34)
93
(34)
96
(36)
94
(34)
95
(35)
95
(35)
94
(34)
94
(34)
93
(34)
92
(33)
91
(33)
96
(36)
Mean maximum °F (°C) 88.4
(31.3)
88.5
(31.4)
89.2
(31.8)
90.2
(32.3)
90.8
(32.7)
91.1
(32.8)
90.8
(32.7)
90.6
(32.6)
90.4
(32.4)
90.4
(32.4)
89.9
(32.2)
88.8
(31.6)
92.0
(33.3)
Mean daily maximum °F (°C) 85.7
(29.8)
85.7
(29.8)
86.7
(30.4)
87.9
(31.1)
88.5
(31.4)
88.5
(31.4)
87.7
(30.9)
87.0
(30.6)
87.0
(30.6)
87.2
(30.7)
87.4
(30.8)
86.6
(30.3)
87.2
(30.7)
Daily mean °F (°C) 80.3
(26.8)
80.1
(26.7)
81.0
(27.2)
82.3
(27.9)
83.0
(28.3)
83.1
(28.4)
82.2
(27.9)
81.5
(27.5)
81.5
(27.5)
81.7
(27.6)
82.2
(27.9)
81.6
(27.6)
81.7
(27.6)
Mean daily minimum °F (°C) 75.0
(23.9)
74.6
(23.7)
75.4
(24.1)
76.7
(24.8)
77.5
(25.3)
77.7
(25.4)
76.8
(24.9)
76.1
(24.5)
76.0
(24.4)
76.3
(24.6)
77.0
(25.0)
76.5
(24.7)
76.3
(24.6)
Mean minimum °F (°C) 71.6
(22.0)
71.4
(21.9)
71.9
(22.2)
73.3
(22.9)
74.1
(23.4)
74.6
(23.7)
73.8
(23.2)
73.4
(23.0)
73.3
(22.9)
73.4
(23.0)
73.9
(23.3)
73.3
(22.9)
70.2
(21.2)
Record low °F (°C) 66
(19)
65
(18)
66
(19)
68
(20)
70
(21)
70
(21)
70
(21)
70
(21)
70
(21)
67
(19)
68
(20)
68
(20)
65
(18)
Average precipitation inches (mm) 5.34
(136)
4.15
(105)
2.77
(70)
3.50
(89)
4.45
(113)
6.51
(165)
12.25
(311)
17.66
(449)
15.17
(385)
12.73
(323)
8.29
(211)
5.30
(135)
98.12
(2,492)
Average precipitation days (≥ 0.01 in) 20.1 18.0 18.3 18.9 19.7 23.2 26.0 25.9 25.1 25.4 23.9 22.7 267.2
Average relative humidity (%) 83.7 81.9 83.1 82.0 82.7 82.7 87.3 88.7 88.8 88.3 86.6 83.0 84.9
Mean monthly sunshine hours 176.0 173.7 216.4 214.0 219.9 193.8 156.1 142.2 132.7 132.6 135.0 143.4 2,035.8
Percent possible sunshine 50 53 58 57 56 50 39 37 36 36 39 41 46
Source: NOAA (relative humidity and sun 1961–1990)

Ecology

Main article: Marianas tropical dry forests Further information: List of endemic plants in the Mariana Islands; List of threatened, endangered and extinct species in the Mariana Islands; Invasive species in Guam; Climate change in Guam; and Guam National Wildlife Refuge
Hiking in Guam's limestone forest.

Guam is home to a diverse array of ecosystems, including coral reefs, deep seas, sea grasses, beach strand, mangroves, a variety of different limestone forest types, volcanic forests and grasslands, riparian systems, and caves. There are approximately 17 species of plant that are endemic only to the island of Guam, and many more that are endemic to the Mariana Islands. Numerous endemic insects have been described. There are approximately 29 land snails listed as endemic to the island of Guam, although many are now endangered or presumed extinct. Guam once hosted 14 kinds of terrestrial birds, 7 of which were endemic to Guam on the species or subspecies level, although all but one of the 14 are now extinct, extirpated, or endangered. Three locations on Guam (Guam National Wildlife Refuge, Cocos Island, and Mahlac Caves) have been identified as Important Bird Areas (IBA) by BirdLife International because they support populations of Micronesian starlings, Mariana swiftlets, Mariana crows, and Guam rails. The Guam rail became the second bird species to ever be downlisted from Extinct in the wild after a population was established on Cocos Island. Guam was home to three native bat species: the little Mariana fruit bat (Pteropus tokudae), now extinct; the endangered Pacific sheath-tailed bat (Emballonura semicaudata rotensis); and the endangered Mariana fruit bat (Pteropus mariannus mariannus).

The introduction of the brown tree snake nearly eradicated the native bird population.

Guam has experienced severe effects of invasive species upon the natural biodiversity of the island. These include the local extinction of endemic bird species after the introduction of the brown tree snake, an infestation of the coconut rhinoceros beetle destroying coconut palms, and the effect of introduced feral mammals and amphibians.

Wildfires plague the forested areas of Guam every dry season despite the island's humid climate. Most fires are caused by humans with 80% resulting from arson. Poachers often start fires to attract deer to the new growth. Invasive grass species that rely on fire as part of their natural life cycle grow in many regularly burned areas. Grasslands and "barrens" have replaced previously forested areas leading to greater soil erosion.

During the rainy season, sediment is carried by the heavy rains into the Fena Lake Reservoir and Ugum River, leading to water quality problems for southern Guam. Eroded silt also destroys the marine life in reefs around the island. Soil stabilization efforts by volunteers and forestry workers (planting trees) have had little success in preserving natural habitats.

Previously extensively dredged, Tumon Bay is now a marine preserve.

Efforts have been made to protect Guam's coral reef habitats from pollution, eroded silt and overfishing, problems that have led to decreased fish populations. This has both ecological and economic value, as Guam is a significant vacation spot for scuba divers, and one study found that Guam's reefs are worth $127 million per year. In recent years, the Department of Agriculture, Division of Aquatic and Wildlife Resources has established several new marine preserves where fish populations are monitored by biologists. These are located at Pati Point, Piti Bomb Holes, Sasa Bay, Achang Reef Flat, and Tumon Bay.

Before adopting U.S. Environmental Protection Agency standards, portions of Tumon Bay were dredged by the hotel chains to provide a better experience for hotel guests. Tumon Bay has since been made into a preserve. A federal Guam National Wildlife Refuge in northern Guam protects the decimated sea turtle population in addition to a small colony of Mariana fruit bats.

Harvest of sea turtle eggs was a common occurrence on Guam before World War II. The green sea turtle (Chelonia mydas) was harvested legally on Guam before August 1978, when it was listed as threatened under the Endangered Species Act. The hawksbill sea turtle (Eretmochelys imbricata) has been on the endangered list since 1970. In an effort to ensure the protection of sea turtles on Guam, routine sightings are counted during aerial surveys and nest sites are recorded and monitored for hatchlings.

Geology

Two Lovers Point, a national natural monument, is a coralline limestone sea cliff north of Guam.

The tip of the heavily submerged Eastern Mariana Ridge, part of the Izu-Bonin Mariana Islands. Mariana (IBM) Arc . The IBM Arc is a convergent tectonic plate boundary where the western part of the Pacific Plate is subducted beneath the Philippine Sea Plate. Guam is located on the Mariana Plate, a microplate between two larger plates. The subduction zone is marked by the Mariana Trench, which is the deepest trench on planet Earth. The three deepest places are located south of Guam. From east to west they are:

Nero Trench, 9,660 m (31,690 ft) deep, the deepest known in the ocean from 1899 to 1927

  • Life in the Roman world of Nero and St. Paul Life in the Roman world of Nero and St. Paul

Sirena Trench, third deepest at 10,714 m ( 35,151 feet)

  • GEBCO 2019 bathymetry Challenger Deep and Sirena Deep. GEBCO 2019 bathymetry Challenger Deep and Sirena Deep.

Challenger Deep, the deepest point depth is 10,902 meters (35,768 feet) up to 10,929 meters (35,856 feet).

  • Address to the Royal Geographical Society Address to the Royal Geographical Society

Guam has had three major eruptions in its history. On the southwest coast, the first eruption in the Middle Eocene produced the Fakpi Formation, still the largest formation, and laid the foundation of the island. A second eruption created the Alutom Formation, which is still the uppermost formation in the middle of the island. The Mount Alifan-Mount Lamlam ridge is the remnant of the Alutom Formation caldera:7.

The last volcanic layer, called the Umatak Formation, was formed by the third and final eruption in southern Guam.

Volcanic activity. alternating inundations of islands with coral reefs, these reefs are raised and rotated in limestone. in the center, low hills of the Alutom Formation; the mountains of the Umatak Formation to the south; and the coastal lowlands that surround most of the island.

Much of the coast is protected by a fringing reef.

The soils are generally silt-clay or clayey, and may be grey, black, brown or reddish-brown; acidity and depth vary.

Guam has four National Natural Monuments, geologic specimens of the island: Fakpi Point, Fuha Point, Lam Lam Mountain, and Two Lover's Point.

Earthquakes

Guam occasionally experiences earthquakes, the epicenter Most of them are located near Guam, the magnitude ranges from 5.0 to 8.7. Unlike Anatahan in the Northern Mariana Islands, Guam is not volcanically active, although volcanic smog from Anatahan affects it due to its close proximity.

Demographics

Historical population
CensusPop.Note
191011,806
192013,27512.4%
193018,50939.4%
194022,29020.4%
195059,498166.9%
196067,04412.7%
197084,99626.8%
1980105,97924.7%
1990133,15225.6%
2000154,80516.3%
2010159,3582.9%
2020168,4855.7%
Main article: Demographics of Guam

In the 2020 United States Census, the largest ethnic group were the native Chamorros, accounting for 32.8% of the population. Asians, including Filipinos, Koreans, Chinese, and Japanese, accounted for 35.5% of the population. Other ethnic groups of Micronesia, including those of Chuukese, Palauan, and Pohnpeians, accounted for 13.2%. 10% of the population were multiracial, (two or more races). European Americans made up 6.8% of the population; 1% are African Americans, and 3% are Hispanic; there are 1,740 Mexicans in Guam, and there are other Hispanic ethnicities on the island. The estimated interracial marriage rate is over 40%.

The official languages of the island are English and Chamorro. Unlike most of its neighboring languages, Chamorro is not classified as Micronesian or Polynesian. Rather, like Palauan, it possibly constitutes an independent branch of the Malayo-Polynesian language family. Filipino is also commonly spoken across the island. Other Pacific and Asian languages are spoken in Guam as well. Spanish, which was the language of administration for 300 years, influenced the Chamorro language.

The predominant religion of Guam is Christianity. Three-quarters of the population adheres to Catholicism, while most of the remainder belong to Protestant churches. According to the Pew Research Center, the religious demography of Guam in 2010 was as follows:

In 2020, the Vatican claimed that 87.72% of the population was Catholic, with 54 priests and 64 nuns across 27 parishes.

Culture

The Guam Museum in Hagåtña opened in 2016
Main article: Culture of Guam Further information: Chamorro people and Music of Guam

The culture of Guam is a reflection of traditional Chamorro customs, in combination with American, Spanish and Mexican traditions. Post-European-contact Chamorro Guamanian culture is a combination of American, Spanish, Filipino, other Micronesian Islander and Mexican traditions. Few indigenous pre-Hispanic customs remained following Spanish contact, but include plaiting and pottery. There has been a resurgence of interest among the Chamorro to preserve the language and culture.

Hispanic influences are manifested in the local language, music, dance, sea navigation, cuisine, fishing, games (such as batu, chonka, estuleks, and bayogu), songs, and fashion. The island's original community are Chamorro natives, who have inhabited Guam for almost 4000 years. They had their own language related to the languages of Indonesia and southeast Asia. The Spanish later called them Chamorros. A derivative of the word, Chamorri, means "noble race". They began to grow rice on the island.

Youth performance of traditional dance at Micronesia Mall, 2012

Historically, the native people of Guam venerated the bones of their ancestors. They kept the skulls in their houses in small baskets, and practiced incantations before them when it was desired to attain certain objects. During Spanish rule (1668–1898) the majority of the population was converted to Catholicism and religious festivities such as Easter and Christmas became widespread. Many Chamorros have Spanish surnames, although few of the inhabitants are themselves descended from the Spaniards. Instead, Spanish names and surnames became commonplace after their conversion to Catholicism and the imposition of the Catálogo alfabético de apellidos in Guam.

Historically, the diet of the native inhabitants of Guam consisted of fish, fowl, rice, breadfruit, taro, yams, bananas, and coconuts used in a variety of dishes. Post-contact Chamorro cuisine is largely based on corn, and includes tortillas, tamales, atole, and chilaquiles, which are a clear influence from Mesoamerica, principally Mexico, from Spanish trade with Asia.

Due to foreign cultural influence from Spain, most aspects of the early indigenous culture have been lost, though there has been a resurgence in preserving any remaining pre-Hispanic culture in the last few decades. Some scholars have traveled throughout the Pacific Islands, conducting research to study what the original Chamorro cultural practices such as dance, language, and canoe building may have been like.

Sports

An outrigger canoe team at Tumon

Guam's most popular sport is American football, followed by basketball and baseball respectively. Soccer, Jiu Jitsu, and Rugby are also somewhat popular. Guam hosted the Pacific Games in 1975 and 1999. At the 2007 Games, Guam finished 7th of 22 countries in the medal count, and 14th at the 2011 Games.

Guam men's national basketball team and the women's team are traditional powerhouses in the Oceania region, behind the Australia men's national basketball team and the New Zealand national basketball team. As of 2019, the men's team is the reigning champion of the Pacific Games Basketball Tournament. Guam is home to various basketball organizations, including the Guam Basketball Association.

The Guam national football team was founded in 1975 and joined FIFA in 1996. It was once considered one of FIFA's weakest teams, and experienced their first victory over a FIFA-registered side in 2009. Guam hosted qualifying games on the island for the first time in 2015 and, in 2018, clinched their first FIFA World Cup Qualifying win. The Guam national rugby union team played its first match in 2005 and has never qualified for a Rugby World Cup.

As an aspect of cultural revival, sling competitions are also being organized on Guam. As a national pastime of cultural import, the ovoid shape on Guamanian flag is that of a sling stone.

Economy

Beaches at the tourist center of Tumon
Main article: Economy of Guam See also: Energy in Guam and Underwater diving on Guam
This section needs to be updated. Please help update this article to reflect recent events or newly available information. (January 2019)

Guam's economy depends primarily on tourism, Department of Defense installations and locally owned businesses. Under the provisions of a special law by Congress, it is Guam's treasury rather than the U.S. treasury that receives the federal income taxes paid by local taxpayers, including military and civilian federal employees assigned to Guam.

Tourism

See also: Underwater diving on Guam

Lying in the western Pacific, Guam is a popular destination for Japanese and South Koreans. Its tourist hub, Tumon, features over 20 large hotels, a Duty Free Shoppers Galleria, Pleasure Island district, indoor aquarium, Sandcastle Las Vegas–styled shows and other shopping and entertainment venues. It is a relatively short flight from Asia, with 3 to 4-star hotels and seven public golf courses accommodating over a million tourists per year.

75% of the tourists are Japanese. Guam also receives a sizable number of tourists from South Korea, the U.S., the Philippines, and Taiwan. Significant sources of revenue include duty-free designer shopping outlets, and the American-style malls: Micronesia Mall, Guam Premier Outlets, the Agana Shopping Center, and the world's largest Kmart.

Terminal at Antonio B. Won Pat International Airport. The airport hosts a hub of United Airlines, Guam's largest private-sector employer.

The economy had been stable since 2000 due to increased tourism. Previously, it was expected to stabilize with a planned transfer of U.S. Marine Corps' 3rd Marine Expeditionary Force, in Okinawa, Japan (approximately 8,000 Marines, along with their 10,000 dependents), to Guam between 2010 and 2015. However, the move was delayed until late 2020. Also, the number of Marines to be moved from Okinawa to Guam decreased from 10,000 to 5,000, with the move now expected to be complete in 2025.

As of 2008, Guam's largest single private sector employer with about 1,400 jobs, was Continental Micronesia, a subsidiary of Continental Airlines. Continental Airlines merged with and is now a part of United Airlines, a subsidiary of Chicago-based United Airlines Holdings, Inc. As of 2008 the Continental Micronesia annual payroll in Guam was $90 million.

Budget and unemployment

In 2003, Guam had a 14% unemployment rate, and the government suffered a $314 million budget shortfall. As of 2019 the unemployment rate had dropped to 6.1%. By September 2020, the unemployment rate had risen again to 17.9%. As of June 2023 the unemployment rate had fallen to 4.0%. The unemployment rate in Guam for September 2023 was 4.1%, an increase of 0.1 percentage points from the June 2023 figure of 4.0%, and a reduction of 0.3 percentage points from the September 2022 figure one year earlier of 4.4%.

Pacific migration to Guam

The Compacts of Free Association (COFA) between the United States, the Federated States of Micronesia, the Republic of the Marshall Islands, and the Republic of Palau accords the former entities of the Trust Territory of the Pacific Islands a political status of "free association" with the United States. The Compacts generally allow citizens of these island nations to reside in the 50 United States, and in US territories. Many people from other Pacific islands were attracted to Guam due to its proximity, environmental, and cultural familiarity.

Due to the impact of increased utilization of public assistance programs due to immigration, aid has been provided to the nations receiving immigrants. In 2003, the amended COFA was enacted, which provided 30 million dollars annually to Guam, Hawaii, American Samoa and the Northern Mariana Islands, as well as to forgive 157 million dollars of Guam's debt to the federal government to offset money already spent on public assistance programs. In 2024, the COFA was amended again to renew aid the freely associated nations as well as Guam and other U.S. Pacific territories.

Military bases

A map of U.S. military lands on Guam, 2010

Joint Region Marianas maintains jurisdiction over installations, which cover approximately 39,000 acres (16,000 ha), or 29% of the island's total land area. These include:

In 2010, the U.S. military proposed building a new aircraft carrier berth on Guam and moving 8,600 Marines, and 9,000 of their dependents, to Guam from Okinawa, Japan. Including the required construction workers, this buildup would increase Guam's population by a total of 79,000, a 49% increase over its 2010 population of 160,000. In a February 2010 letter, the United States Environmental Protection Agency sharply criticized these plans because of a water shortfall, sewage problems and the impact on coral reefs. As of 2022, the Marine Corps has decided to place 5,000 Marines on the island within the first half of the 2020s, with 1,300 already stationed on the base.

Government and politics

Incumbent governor Lou Leon Guerrero
See also: Politics of Guam, Voting in Guam, and Political party strength in Guam

Guam is governed by a popularly elected governor and a unicameral 15-member legislature, whose members are known as senators. Its judiciary is overseen by the Supreme Court of Guam.

The District Court of Guam is the court of United States federal jurisdiction in the territory. Guam elects one delegate to the United States House of Representatives, currently Republican James Moylan. The delegate does not have a vote on the final passage of legislation, but is accorded a vote in committee, and the privilege to speak to the House.

U.S. citizens in Guam vote in a presidential straw poll for their choice in the U.S. presidential general election, but since Guam has no votes in the Electoral College, the poll has no real effect. However, in sending delegates to the Republican and Democratic national conventions, Guam does have influence in the national presidential race. These delegates are elected by local party conventions.

Political status

James Moylan is the Delegate for Guam's at-large congressional district.

In the 1980s and early 1990s, there was a significant movement in favor of this U.S. territory becoming a commonwealth, which would give it a level of self-government similar to Puerto Rico and the Northern Mariana Islands. In a 1982 plebiscite, voters indicated interest in seeking commonwealth status. However, the federal government rejected the version of a commonwealth that the government of Guam proposed, because its clauses were incompatible with the Territorial Clause (Art. IV, Sec. 3, cl. 2) of the U.S. Constitution. Other movements advocate U.S. statehood for Guam, union with the state of Hawaii, or union with the Northern Mariana Islands as a single territory, or independence.

The first Guam Constitutional Convention was funded by the 10th Guam Legislature and met from June 1, 1969, through June 29, 1970, with 43 elected delegates. The second Guam Constitutional Convention was convened on July 1, 1977, to create a constitution for Guam that would redefine the island's relationship with the US rather than merely modifying the existing relationship. The convention met periodically through October 31, 1977. Although approved at the federal level, the people of Guam overwhelmingly rejected the Constitution in a referendum held in August 1979, with 82% opposed. No new convention has been held pursuant to US congressional authority since 1979.

A Commission on Decolonization was established in 1997 to educate the people of Guam about the various political status options in its relationship with the U.S.: statehood, free association, and independence. The island has been considering another non-binding plebiscite on decolonization since 1998. The group was dormant for some years. In 2013, the commission began seeking funding to start a public education campaign. There were few subsequent developments until late 2016. In early December 2016, the Commission scheduled a series of education sessions in various villages about the current status of Guam's relationship with the U.S. and the self-determination options that might be considered. The commission's current executive director is Edward Alvarez and there are ten members. The group is expected to release position papers on independence and statehood but the contents have not yet been completed.

The United Nations is in favor of greater self-determination for Guam and other such territories. The UN's Special Committee on Decolonization has agreed to endorse the Governor's education plan. The commission's May 2016 report states: "With academics from the University of Guam, was working to create and approve educational materials. The Office of the Governor was collaborating closely with the Commission" in developing educational materials for the public.

The United States Department of the Interior approved a $300,000 grant for decolonization education, Edward Alvarez told the United Nations Pacific Regional Seminar in May 2016. "We are hopeful that this might indicate a shift in policy to its Non-Self-Governing Territories such as Guam, where they will be more willing to engage in discussions about our future and offer true support to help push us towards true self-governances and self-determination."

On July 31, 2020, the Government of Guam joined the Unrepresented Nations and Peoples Organization (UNPO).

Its future political status has been a matter of significant discussion, with public opinion polls indicating a strong preference of becoming a U.S state.

Villages

Hagåtña from the Spanish-built Fort Santa Agueda
Main article: Villages of Guam See also: List of census-designated places in Guam

Guam is divided into 19 municipal villages:

Transportation and communications

Main articles: Communications in Guam and Transportation in Guam
Guam Highway 8 route marker

Most of the island has state-of-the-art mobile phone services and high-speed internet widely available through either cable or DSL. Guam was added to the North American Numbering Plan (NANP) in 1997. The country code 671 became NANP area code 671. This removed the barrier of high-cost international long-distance calls to the continental U.S.

Guam is a major hub for submarine communications cables between the Western U.S., Hawaii, Australia and Asia. Guam currently serves twelve submarine cables, with most continuing to China. In 2012 Slate stated that the island has "tremendous bandwidth" and internet prices comparable to those of the U.S. Mainland due to being at the junction of undersea cables.

In 1899, the local postage stamps were overprinted "Guam" as was done for the other former Spanish colonies, but this was discontinued shortly thereafter and regular U.S. postage stamps have been used ever since. Guam is part of the U.S. Postal System (postal abbreviation: GU, ZIP code range: 96910–96932). Mail to Guam from the U.S. mainland is considered domestic and no additional charges are required. Private shipping companies, such as FedEx, UPS, and DHL, however, have no obligation to do so, and do not regard Guam as domestic.

The speed of mail traveling between Guam and the states varies depending on size and time of year. Light, first-class items generally take less than a week to or from the mainland. Larger first-class or Priority items can take a week or two. Fourth-class mail, such as magazines, are transported by sea after reaching Hawaii. Most residents use post office boxes or private mail boxes, although residential delivery is becoming increasingly available.

Construction at the Port of Guam, 2014

The Port of Guam is the island's lifeline, because most products must be shipped into Guam for consumers. It receives the weekly calls of the Hawaii-based shipping line Matson, Inc. whose container ships connect Guam with Honolulu, Hawaii; Los Angeles, California; Oakland, California; and Seattle, Washington. The port is also the regional transhipment hub for over 500,000 customers throughout the Micronesian region. The port is the shipping and receiving point for containers designated for the island's U.S. Department of Defense installations, Andersen Air Force Base and Commander, Naval Forces Marianas and eventually the Third Marine Expeditionary Force.

Guam is served by the Antonio B. Won Pat International Airport. The island is outside the United States customs zone, so Guam is responsible for establishing and operating its own customs and quarantine agency and jurisdiction. Therefore, the U.S. Customs and Border Protection only carries out immigration, but not customs functions. Since Guam is under federal immigration jurisdiction, passengers arriving directly from the United States skip immigration and proceed directly to Guam Customs and Quarantine.

Due to the Guam and CNMI visa waiver program for certain countries, an eligibility pre-clearance check is carried on Guam for flights to the States. For travel from the Northern Mariana Islands to Guam, a pre-flight passport and visa check is performed before boarding the flight to Guam. On flights from Guam to the Northern Mariana Islands, no immigration check is performed. Traveling between Guam and the States through a foreign point requires a passport.

Most residents travel within Guam using personally owned vehicles. The Guam Regional Transit Authority provides fixed route bus and paratransit services, and some commercial companies operate buses between tourist-frequented locations.

Education

See also: List of schools in Guam
The Umatac Outdoor Library, built in 1933, was the first library in southern Guam.

Guam Public Library System operates the Nieves M. Flores Memorial Library in Hagåtña and five branch libraries.

The Guam Department of Education serves the entire island of Guam. In 2000, 32,000 students attended Guam's public schools, including 26 elementary schools, eight middle schools, and six high schools and alternative schools. Guam Public Schools have struggled with problems such as high dropout rates and poor test scores.

Guam's educational system has always faced unique challenges as a small community located 6,000 miles (9,700 km) from the U.S. mainland with a very diverse student body including many students who come from backgrounds without traditional American education. An economic downturn in Guam since the mid-1990s has compounded the problems in schools.

Before September 1997, the U.S. Department of Defense partnered with the Guam Board of Education. In September 1997, the Department of Defense Education Activity (DoDEA) opened its own schools for children of military personnel. DoDEA schools, which also serve children of some federal civilian employees, had an attendance of 2,500 in 2000. DoDEA Guam operates three elementary/middle schools and one high school.

The University of Guam (UOG) and Guam Community College, both fully accredited by the Western Association of Schools and Colleges, offer courses in higher education. UOG is a member of the exclusive group of only 106 land-grant institutions in the entire United States. Pacific Islands University is a small Christian liberal arts institution, nationally accredited by the Transnational Association of Christian Colleges and Schools.

Health care

Further information: 2020 coronavirus pandemic in Guam

The Government of Guam maintains the island's main health care facility, Guam Memorial Hospital, in Tamuning. U.S. board certified doctors and dentists practice in all specialties. The U.S. Naval Hospital in Agana Heights serves active-duty members and dependents of the military community.

There is one subscriber-based air ambulance located on the island, CareJet, which provides emergency patient transportation across Guam and surrounding islands. A private hospital, the Guam Regional Medical City, opened in early 2016. Medicaid is accepted in Guam.

See also

Notes

  1. Despite being under the sovereignty of the United States since 1898, Guam has not been fully incorporated into the country for constitutional purposes. See the page for the Insular Cases for more information.

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Works cited

Further reading

  • Maga, Timothy P. (1988). Defending Paradise: The United States and Guam, 1898–1950. Garland.
  • Rogers, Robert F. (1995). Destiny's Landfall: A History of Guam. University of Hawaii Press.
  • Spear, Jane E. (2014). "Guamanian Americans". In Riggs, Thomas (ed.). Gale Encyclopedia of Multicultural America. Vol. 2 (3rd ed.). Gale. pp. 263–273.

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13°30′N 144°48′E / 13.500°N 144.800°E / 13.500; 144.800

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