What was the primary aim of the Truman Doctrine?

The primary aim of the Truman Doctrine was to prevent the spread of communism. Announced in 1947, the doctrine was a response to the growing influence of the Soviet Union and the threat of communist expansion in Europe and beyond. It articulated a policy of containment, asserting that the United States would provide political, military, and economic assistance to countries resisting communist insurgencies or external pressures.

This approach was particularly aimed at regions such as Greece and Turkey, where the U.S. believed that a failure to support these nations could lead to their falling under communist control. The broader context of the Cold War highlights how the Truman Doctrine set the stage for U.S. foreign policy for decades, marking a shift from isolationism to a more interventionist stance aimed at curbing Soviet influence globally.

The other options, while related to international relations in the post-war period, do not accurately capture the essence of the Truman Doctrine's central focus on containing communism as a defining feature of American policy during that era.