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A serbian shot and killed Archduke Ferdinand and Archduke's wife.
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Ausrians got mad when Archduke was assasinated by a serbian,so Austia-Hungary declared war on Serbia.
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World war I started in July 28,1914 and ended in November 11,1918
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When Russia heard that Austria-Hungary declared war on Serbia, and then Russia helped Serbia and declared war on Austria-Hungary.
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Germany ordered Russia not to fight,but Russia ignored them, so Germany declared war on Russia.
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Germany told France to join there side, but France did not answer, so Germany declared war on France.
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Germany told the king to invade Belgium, so the king refused.
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When Great Britian heard that Germany invaded Belgium, then Great Britian declared war on Germany.
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When Germany used poison gas, the allied and the central powers used new technology.
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The british ship the Lusitania was sunked by the german submarine, and angred many americans.
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Great Britian told U.S that the telagram that streeches Germany to Mexicois that Germany told Mexico to join the war, if the central powers win then the will win all there land that mexico lost during war against U.S.
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Germany told to the people who were in the submarines to sink any ship that carried weaponsto the Allied powers.
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When many people was angry, they wanted war on germany, so President Wilson told congress to declare war on Germany.
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When congress heard that nWilson wanted to declare war on Germany, then congress apcected.
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U.s finally entered WWI and wanted revenge on Germany and the Central powers.
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When the Allied powers saw a white flag, the Central powers surrendered.
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The central powers surrendered, Wilson made a treaty that will take lots of land from the central powers.