Claim: The United States battled in the Vietnam War to prevent the spread of communism.
Evidence: The U.S. government viewed its involvement in the war as a way to prevent a communist takeover of South Vietnam.
The Vietnam War -LRB- Chiến tranh Việt Nam -RRB- , also known as the Second Indochina War , and known in Vietnam as Resistance War Against America -LRB- Kháng chiến chống Mỹ -RRB- or simply the American War , was a war that occurred in Vietnam , Laos , and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975.