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Hitler violates the Treaty of Versailles by introducing military conscription.
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German Jews stripped of rights by Nuremberg Race Laws.
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Japan invades China, initiating World War II in the Pacific.
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Germany invades Denmark and Norway. Denmark surrenders on the day of the attack; Norway holds out until June 9.
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Italy enters the war. Italy invades southern France on June 21.
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Germany, Italy, and Japan sign the Tripartite Pact
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Italy invades Greece from Albania on October 28.
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The United States declares war on Japan, entering World War II. Japanese troops land in the Philippines, French Indochina (Vietnam, Laos, Cambodia), and British Singapore. By April 1942, the Philippines, Indochina, and Singapore are under Japanese occupation.