A governmental action that was consistent with the Cold War mentality was the?

A governmental action consistent with the Cold War mentality was the establishment of the Truman Doctrine in 1947, which aimed to contain the spread of communism by providing military and economic support to countries resisting Soviet influence. This doctrine marked a significant shift in U.S. foreign policy, emphasizing a proactive stance against perceived threats from the Soviet Union. It laid the groundwork for subsequent actions, such as the Marshall Plan and the formation of NATO, solidifying the ideological divide between the West and the Eastern Bloc.