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Arthduke Francis Ferdinand visited Sarajevo, the capital of Bosnia. Although Bosnia was under Austria-Hungary rule, it was home to many serbs. Gavrilo Princip, a member of the Black Hand, assassination.
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Austria gives Serbia an ultimatum, anit-Austiran agitation , punish serbias involved, and Austria get's to join the investigation. Serbia can not do all three, so Austira declares war.
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From when Austira declares war on Serbia through August 4, Serbia's ally, Russia, declares war on Austira. Germany, Austria's ally, then declares war on Russia. France, another ally of Britian, declares war on Germany, who then declares war on France. German/Austria- Central Powers France/Britain/Russia/Serbia- Allies
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In late October Ottoman empire joins Central powers and cut off allies supplies throw the Dardanelles.
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Tanks, zeppelins, u-boats, submarines, and poison gas were all new technology brought into the war.
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The German U- Boat sunk a cruise ship killing 128 americans, President wilson threatens to cut off diplomatic relations with germany. Germany stops unrestriscted submarine warfare
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bulgaia joined Central Powers and helps defeat Serbia.
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Germans resume unrestricted submarine warfare, angering the U.S. also around this tme period british intercept a message from a germany to mexico asking them to attack the U.S.
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U.S. congress declares war on germany and the U.S. joins the allies bringing them new morale.
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World War I coomes to an end when Germany signs an armistice and the Central Powers are defeated by the Allies, because the allies counter attack Germany and slowly force them back and uprisings occur in hungry cities in Germany
