A foreign policy that attempted to prevent the spread of Communism
Explanation:
During the Cold War, the United States wanted to slow the USSR's spread of communism by stopping it from spreading, but not reconverting already communist countries. This was part of the Truman Doctrine.
Containment was a cold war policy part of the Truman Doctrine. It was basically a commitment by the USA to check the spread and territorial expansion of communism which was being spearheaded by the Soviet union which was a rival superpower during the cold war era. Under the policy, the USA committed to assist any nation that was in need of help to check communism spread.
