USA HISTORY

Detailed explanation-1: -The US justified its military intervention in Vietnam by the domino theory, which stated that if one country fell under the influence of Communism, the surrounding countries would inevitably follow. The aim was to prevent Communist domination of South-East Asia.

Detailed explanation-2: -Answer and Explanation: The domino theory profoundly impacted U.S. foreign policy. It was the underlying approach behind U.S. involvement in the Vietnam War. The U.S. became involved in Vietnam because it was feared that if the whole of Vietnam became communist, other surrounding countries would follow suit.

Detailed explanation-3: -The domino theory was a Cold War policy that suggested a communist government in one nation would quickly lead to communist takeovers in neighboring states, each falling like a row of dominos.

Detailed explanation-4: -The domino theory was the basis for the United States strategy of containment, and the reason for entering the Vietnam War. The Vietnam War was a result of the national strategy of containment. The national strategy of containment demanded the U.S. stop communist aggression into the countries of Southeast Asia.

Detailed explanation-5: -Domino theory came in to play in 1950 when the communist victory in China and subsequent war in Korea were seen as a threat to Southeast Asia. The combination of these factors persuaded the Eisenhower administration to begin aiding the French in their war.