The document provides information about the Vietnam War which occurred between 1959-1975 in Vietnam, Laos, and Cambodia. It details the key players including North Vietnam and the Viet Cong who were backed by Communist allies, and South Vietnam backed by the United States and other anti-Communist countries. The war began as an ideological conflict between communism and democracy but grew to involve massive US troop deployment and bombing of North Vietnam due to concerns that further communist gains could destabilize other countries in the region.