Vietnam was divided into the __________ north and the ___________ south. The United States wanted to stop the spread of ___________. The American military and the South Vietnamese were unable to ________ the Communist North Vietnamese. In 1975, North Vietnam invaded and defeated ___________ _________ and __________ the country.

Vietnam was divided into the Communist north and the non-Communist south. The United States wanted to stop the spread of Communism. The American military and the South Vietnamese were unable to defeat the Communist North Vietnamese. In 1975, North Vietnam invaded and defeated South Vietnam and unified the country.