WORLD HISTORY

Detailed explanation-1: -In 1947, President Harry S. Truman pledged that the United States would help any nation resist communism in order to prevent its spread. His policy of containment is known as the Truman Doctrine.

Detailed explanation-2: -President Dwight D. Eisenhower coins one of the most famous Cold War phrases when he suggests the fall of French Indochina to the communists could create a “domino” effect in Southeast Asia. The so-called “domino theory” dominated U.S. thinking about Vietnam for the next decade.

Detailed explanation-3: -Under the Eisenhower Doctrine, a Middle Eastern country could request American economic assistance or aid from U.S. military forces if it was being threatened by armed aggression.

Detailed explanation-4: -A foreign policy doctrine is a general statement of foreign policy and belief system through a doctrine. In some cases, the statement is made by a political leader, typically a nation’s chief executive or chief diplomat, and comes to be named after that leader.