Why did the United States send troops to Vietnam?

Answer 1

The United States sent troops to Vietnam in order to support the South Vietnamese government in its fight against communist forces from North Vietnam. The U.S. government believed that by intervening in the conflict, they could prevent the spread of communism throughout Southeast Asia and maintain stability in the region. Additionally, the U.S. had international commitments to support their ally, South Vietnam, and prevent the communist takeover of the country. The escalation of troops in Vietnam was also a response to the Gulf of Tonkin Incident in 1964, which led to Congress passing the Gulf of Tonkin Resolution, granting President Lyndon B. Johnson the authority to escalate military involvement in Vietnam.