The document provides a timeline of events from 1980 to 1989. It describes: 1) The release of Pac-Man in 1980 and its success as the best-selling video game. 2) The murder of John Lennon in 1980 by Mark David Chapman. 3) The discovery of the HIV virus in 1983 and its identification as the cause of AIDS. 4) Mexico hosting the 1986 World Cup with Argentina winning over Germany.