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World War I was sparked by the assassination of Archduke Franz Ferdinand heir to Austria-Hungary's throne,and his family by a Serbian nationalist . Austria-Hungary declares war on Serbia
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Germany declares war on France and Russia then invades Belgium to get to France
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U.S president Woodrow Wilson declares the U.S will remain neutral in war
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Russia attempts to invade Germany but they are defeated at the battle of tannenburg
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The Allied powers stop the German invasion of Paris.
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Germany declares a war zone around Great Britain, essentially effecting a submarine blockade where even neutral merchant vessels were to be potential targets.
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The Battle of Gallipoli was an unsuccessful attempt by the allied powers to control the sea route from Europe to Russia.
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A British passenger ship, sunk by a German U-Boat.
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Tsar Nicholas II takes personal control over Russia's armies.
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The Battle of Verdun begins. The Battle of Verdun was the longest battle of World War I and was one of the bloodiest. The french brought 3/4 of their army and the German surrendered
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An indecisive naval battle between German and British fleets..
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The Battle of the Somme begins. During the Battle of the Somme, tanks are first introduced into battle. Allied casualties numbered in the millions.
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Germany sends the secret Zimmerman Telegram to Mexico in an effort to get Mexico to join the war. The British intercept and decipher the coded message.
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The U.S officially enters World War I
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The Bolsheviks successfully overthrow the Russian government during the 1917 Russian Revolution.
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Russian revolutionaries setup a Communist government, attempting to make peace with the Central Powers.
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U.S. President Woodrow Wilson issues his Fourteen Points to peace.
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A series of German Attacks along the Western Front.
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The turning point of the war, in which the Allies defeated the Central Powers and advanced continuously until the end of the war.
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The Treaty of Versailles officially ends WWI.
