Question

How america was defeated by vietnamese?

Answer 1

due to intervention of russia and guerrilla tatics of veitnamese

Answer 2

The Vietnam War (Vietnamese: Chiến tranh Việt Nam), also known as the Second Indochina War,[77] and in Vietnam as the Resistance War Against America (Vietnamese: Kháng chiến chống Mỹ) or simply the American War, was a conflict that occurred in Vietnam, Laos, and Cambodia from 1 November 1955[A 1] to the fall of Saigon on 30 April 1975, with U.S. involvement ending in 1973.[78] It was the second of the Indochina Wars and was officially fought between North Vietnam and the government of South Vietnam. The North Vietnamese army was supported by the Soviet Union, China,[30] and other communist allies; the South Vietnamese army was supported by the United States, South Korea, the Philippines, Australia, Thailand and other anti-communist allies.[79] The war is considered a Cold War-era proxy war by some US perspectives.[80] The war would last approximately 19 years and would also form the Laotian Civil War as well as the Cambodian Civil War, which resulted in all three countries becoming communist states in 1975.