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The Archduke was killed by a Serbian. This was important because it started the chain of events leading to WWI.
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This is iimportant because it is the start of WWI.
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Germany and Austria-Hungary were allianced, known as the central powers. On the other side were the allied powers were made of Great Britain, France, and Russia.
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Austria defeats the Russians and drives them east. Austrian army pushs the Russians out of Austria-Hungary.
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The allies attack Germans northeast of Paris in the valley of the Marne river.
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The German forces attack the French intending to provoke counterattacks which could be gunned down with artillery fire.
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British army tried to relieve the pressure on the French. British attack Germans northwest of Verdun in Valley of Somme.
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Germany declares that thier submariens would sink any ship without warning in the waters around Britain. This was called unrestricted submarine warfare
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President wilson asks congress to declare war. The U.S. entered the war on the side of the allies.
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By 1917 nearly 5.5 million Russian soldiers had been wounded, killed, or taken prisoner and the Russian army refused to fight any longer.
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Germany and Russia sign the treaty which ends the war between them.
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Seeing that Germany was weakend, the allies, along with 140,000 fresh American troops attacks the Germans at the Marne river.
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After 4 years of fighting leaders of the victorious nations gathered near paris to make a peace treaty.
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The Treaty of Versailles between germany and the allied powers is signed.