Claim: The United States participated in the Vietnam War.
Evidence: 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.