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Japanese troops begin invasion and occupation of Manchuria after the "Mukden Incident "
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Franklin Delano Roosevelt is elected president of the United States.
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Establishes the line of presidential succession in which the Vice-President becomes president if the President can no longer perform the duties of office.
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Nazi Germany and Imperial Japan sign the Anti-Comintern Pact, directed against the Soviet Union and the international Communist movement.
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Japan invades China, initiating World War II in the Pacific.
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Germany invades Poland, initiating World War II in Europe.
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Germany, Italy, and Japan sign the Tripartite Pact.
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The United States declares war on Japan, entering World War II.
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Having agreed in principle to unconditional surrender on August 14, 1945, Japan formally surrenders, ending World War II.