The United States entered The Vietnam War to stop the Spread of Communism in Indochina
The United States began withdrawal from Vietnam after the Paris Peace Accord in 1973.
how come the united states did not invade north vietnam to end the war
North Vietnam won the war.
The United States never 'occupied' Vietnam. It was invited to send troops to support the government of South Vietnam in its attempts to deal with North Vietnamese aggression.
The United States tried to prevent Ho Chi Minh from controlling Vietnam.
The United States wanted to prevent communism from spreading.
The United States did get involved in the Vietnam war because of communism in Vietnam.