Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
The decisive attack was launched at 50 km from the finish by 20 riders, including Italians Felice Gimondi, Dino Zandegù, Gianni Motta, Franco Bitossi and the previous year's winner, Eddy Merckx. Merckx, left without teammates in the breakaway, broke solo at 20 km from the finish, before being joined by Gianni Motta. After the descent of the Poggio, Gimondi and Bitossi returned to the two leaders, leading to a four-man sprint on the Via Roma. Merckx easily won the sprint, sealing his second Primavera victory, and also established a new record average speed.