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The treaty imposed on Germany by the Allied powers in 1920 after the end of World War I which demanded exorbitant reparations from the Germans.
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The League of Nations was created by the Treaty of Versailles by which nations would help preserve peace and prevent future wars by pledging to respect and protect each other's territory and political independence.
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Benito Mussolini established himself as dictator of Italy in 1924 and founded the ideology of Fascism.
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Joseph Stalin established himself as the Dictator of the Union of Soviet Socialist Republics (USSR) and the Communist Party of the Soviet Union.
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The effects of the great economic crisis of the Great Depression are felt in virtually all corners of the world. Anti-democratic countries form Totalitarianism governments that assert absolute and total control over the public and private lives of people and begin to adopt policies of expansion and aggression led by dictators.
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Adolf Hitler becomes Chancellor of Germany and head of the National Socialist German Workers' Party, better known as the Nazi Party.
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FDR becomes President of the US and implements the beginning of the New Deal with the Hundred Days.
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US Congress passed a series of Neutrality Acts (1935–1939) designed to avoid American involvement in another World War by preventing loans to those countries taking part in such conflicts.
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Adolf Hitler ordered German troops to invade Czechoslovakia on 15 March 1939. The Germans also took over Bohemia, and established a protectorate over Slovakia.
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The United States declares its neutrality on September 5, 1939.
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The Japanese bomb the United States fleet at Pearl Harbor on December 7, 1941.