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. In 1961, President John F.

Detailed explanation-2: -The United States became deeply involved in Vietnam during the 1960s largely due to America’s desire to assure that developing countries modernize as capitalist and democratic. Thus, American involvement began with economic and social support in South Vietnam.

Detailed explanation-3: -The doctrine of containment argued that all-out war should be avoided, but the US should pledge itself to stopping any new communist governments, or preventing any existing communist governments from expanding.

Detailed explanation-4: -The Truman Doctrine, also known as the policy of containment, was President Harry Truman’s foreign policy that the US would provide political, military, and economic aid to democratic countries under the threat of communist influences in order to prevent the expansion of communism.

Detailed explanation-5: -The policy of containment had failed militarily. Despite the USA’s vast military strength it could not stop the spread of communism . The guerrilla tactics used by the Vietcong and their absolute commitment to the cause, far outweighed the desire of the Americans to keep going.