What was the main concern of the U.S. during the Cold War?

The primary concern of the United States during the Cold War was communism. The Cold War was characterized by a geopolitical tension between the U.S. and the Soviet Union, the latter being a communist state. The U.S. aimed to contain the spread of communism around the world, believing that it threatened democracy and capitalism, which were fundamental to American values and economic interests.

This concern led to various policies and actions, such as the Truman Doctrine, which asserted that the U.S. would support countries resisting communism, and the establishment of NATO as a military alliance to counter the Soviet influence in Europe. The U.S. also became involved in several conflicts and interventions aimed at preventing the establishment of communist governments in various countries. This ideological struggle and the fear of communism led to significant political, military, and cultural developments throughout the period.

While capitalism and socialism were part of the broader ideological landscape, and fascism was interjected in historical contexts, they were not the central focus of U.S. concerns during the Cold War as communism uniquely shaped foreign policy and military strategies.