The key events in Vietnam's history from 1945 to 1991 were the Geneva Conference of 1954, the Battle of Dien Bien Phu in 1954, the partition of Vietnam into North and South Vietnam in 1955, the American involvement in Vietnam from 1962 to 1973, the Fall of Saigon in 1975, and the unification of North and South Vietnam under communist rule in 1976.