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Archduke Franz Ferdinand and his wife were assassinated by a Serbian by the name of Gavrilo Princip
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The Austrian-Hungarian Empire declares war on Serbia and starts World War I
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The Germans created the gas bomb
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German U-Boat sunk the Lusiatnia
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President Wilson was reelected and pledged to stay neutral.
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The Russians were forced to leave the war because of civli war
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Germany Sent a note to Mexico asking then for an alliance. The note was intercepted by the Great Britain
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The United States declares war on Germany.
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WWI ended
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The of versailles was signed and WWI is officially over.