WORLD 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: -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. This strategy was developed from a belief in the domino theory.

Detailed explanation-3: -Based on the perceived threat of the domino theory, the U.S. government adopted the policy of containment: trying to contain communism in the countries it was already in and keep it from spreading.

Detailed explanation-4: -According to the “domino theory, ‘’ the United States believed that if Vietnam fell to communism, the rest of Southeast Asia would follow. The United States supported the democratic government of South Vietnam, while the Soviet Union supported the communist government of North Vietnam.

Detailed explanation-5: -What Was the Domino Theory? By 1950, U.S. foreign policy officials had firmly embraced the idea that the fall of Indochina to communism would lead rapidly to the collapse of other nations in Southeast Asia.