Which of the following best describes the United States’ policy of containment following World War II?

Containment was the U.S. policy of stopping communism from spreading beyond countries where it already existed. The United States used economic aid, military assistance, and other measures to support countries resisting communist expansion. It did not mean invading the USSR whenever a takeover seemed possible or limiting support to diplomacy or the United Nations, so D, “use economic and military measures to prevent the spread of communism,” is best.

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