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7.13 Postwar Diplomacy

Part of Period 7: 1890–1945 in AP® US History. Read the opening section, then create a free account for the full interactive lesson, practice, and progress tracking.

The end of World War II ushered in a new era of diplomacy defined by American power and Cold War tension. The devastation of Europe and Asia left the United States and the Soviet Union as the two global giants with competing ideologies. Even before victory, wartime meetings at Yalta and Potsdam revealed competing visions for the future. The United States promoted self-determination and collective security, while the Soviet Union sought a protective sphere of influence in Eastern Europe.

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