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The assasination of Archduke Ferdinad was the spark of WW1. It occured in Sarajevo, and was carried out by a Serbian nationalist group known as "The Black Hand"
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Austria-Hungary declares war on Serbia, beginning WWI
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German submarine sinks the passenger liner Lusitania during crossing from New York to Liverpool, England, killing 128 Americans. Unrestricted submarine warfare was halted.
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Italy declares war on Austria-Hungary and escapes the triple alliance due to a loophole.
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Germany returns to unrestricted submarine warfare halted after the sinking of the Lusitania.
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The United States declares war on Germany after a long struggle to remain neutral.
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Russia Signs Treaty of Brest-Litovsk with Central Powers to end their particiaption in the war. Soviet Russia was in full swing.
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Woodrow Wilson presents to Congress his outline of Fourteen Points required for peace. This is his first attempt.
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Germany signs the Armistice at Compiègne, ending WW1.
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A year after the peace conference in Paris begins, the Treaty of Versailles finally takes effect. Germanys is harshly repremanded and this is the motivation for the rise of Adolf Hitler.