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Archduke Franz Ferdinand and his wife went to Austro-Hungary. The Black Hand supplied a group of students with weapons for an assassination attempt to mark the occasion.
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The Austrian Government blamed the Serbian Government for the assassination of Franz Ferdinand and his wife and declared war on Serbia.
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Germany declared war on Russia because Russia was mobilizing troops and helping Serbia.
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Germany invaded Belgium and was going after France. Germany was putting the Schleiffen Plan in progress. Britain sent an ultimatum to Germany to withdrew from Belgium.
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Because Germany invaded Belgium and would not leave and Britain had an salience with Belgium.
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Britain's Navy was attacking a Turkish fort to help out Russia.
10 ships Britain and Frances 3 out of them were sunk and 2 badly damaged. -
A German U-Boat sunk a British liner that had American lives on it and was pushing the U.S. to join the war
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The United States of America declared war on Germany because they had unrestricted war fare an sinking US ships.
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Following the successful revolution by the Bolsheviks, the Russians signed an Armistice with Germany at Brest-Litovsk. The terms of the treaty were harsh: Russia had to surrender Poland, the Ukraine and other regions.
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Germany and the allies signed the Treaty of Versailles on the 11th hour on the 11 day of the 11 month.
