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Opening of the World Disarmament Conference
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The political impact of the Great Depression and the rise of dictatorships that pursued aggressive foreign policies The failure of collective security, and the League of Nations' inability to take effective action in response to international aggression The foreign policies adopted by Britain and France during the 1930's and their impact on international relations. World War II
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Hitler becomes chancellor of Germany
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Return of the Saar region to Germany after a Plebiscite
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Germany introduces open conscription and begins open rearmament
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Italian invasion of Abyssinia