After the French military withdrawal from Indochina in 1954, the US assumed financial and military support for the South Vietnamese state. The conflict emerged from the First Indochina War between the French colonial government and a left-wing revolutionary movement, the Viet Minh.

involvement ending in 1973, and included the Laotian Civil War and the Cambodian Civil War, which ended with all three countries becoming communist states in 1975. The war, considered a Cold War-era proxy war by some, lasted almost 20 years, with direct U.S. North Vietnam was supported by the Soviet Union, China, and other communist allies South Vietnam was supported by the United States, South Korea, the Philippines, Australia, Thailand, and other anti-communist allies. It was the second of the Indochina Wars and was officially fought between North Vietnam and South Vietnam.

The Vietnam War ( Vietnamese: Chiến tranh Việt Nam), also known as the Second Indochina War, was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975.

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