What doctrine guided U.S. foreign policy between 1947 and 1990?

Question

Quizplus · Accepted Answer

The doctrine that guided U.S. foreign policy between 1947 and 1990 was containment, which aimed at preventing the spread of communism beyond its existing boundaries. This policy was first articulated in the Truman Doctrine and pursued through a series of initiatives such as the Marshall Plan, NATO, and the Korean War. The end of the Cold War and the collapse of the Soviet Union marked the end of the period of containment as the guiding principle of U.S. foreign policy.

What Doctrine Guided U