The U.S. entered the Vietnam war in 1959 and withdrew in 1973
lyndon b. Johnson
Stop communist aggression.
To save the Republic of South Vietnam from being conquered by the COMMUNIST country of North Vietnam.
The US entered the Vietnam war after ww2 because the US wanted to control Communism or stop it completely and half of Vietnam was a commie country and the US did not want the Communism to spread so we entered to stop the commie side of Vietnam and to liberate the Democratic side
South Vietnam was already a sovereign nation by the time the US entered the nation. Its title was the "Republic of South Vietnam."
Part of the cold war.
About 2 1/2 million US servicemen fought in the Vietnam War.
The longest war the United States ever entered was the Vietnam War.
John F. Kennedy was President. 1960 to 1963
The us entered the Vietnamese war in 1950 they exited in 1975 entered to avoid a communist takeover of south Vietnam
The US entered because they signed a document saying that the will help with a war with communism.