The Truman Doctrine summarized the U.S.'s commitment to helping countries resist communism.
The best summary of the Truman Doctrine is:
OA. The United States must do everything it can to help countries oppose communism.
After World War II, Truman's administration aimed to contain the spread of communism, leading to the development of this doctrine. It asserted that the U.S. would support nations resisting communist influence.
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