Answer: The United States would use economic and military measures to prevent the spread of Communism.
The policy of containment that the United States adopted after World War II was designed to prevent the spread of communism abroad. As part of the Cold War, it was a response to the intentions of the Soviet Union to enlarge its communist sphere of influence in Eastern Europe, China, Korea and Vietnam.
The policy is mostly associated with U. S. President Harry Truman, including the establishment of the North Atlantic Treaty Organization (NATO), a mutual defense pact. It promised economic and military support to any country that was fighting to prevent the spread of Communism.