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The shooting of the Archduke, by a serbian nationalist was important because it started the chain of events leading to the war.
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a large part of the German army would rush west to fight France then return to fight Russia in the east
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Austria rejected Serbia's offer and declared war. The same day, Serbia's Ally, Russia, took action, and started the mobilization of troops toward the austrian border.
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Austrians's defeat Russia. And pushed them out of Austria-Hungary.
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The Allies attacked the Germans northwest of Paris. Every soldier was hurled into the struggle
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British, Australian, New Zealand, and French troops made repeated assults on the Gallpoli Penninsula trying to take the Dardanelles strait
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Germany launches a massive attack against France near Verdun.
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British army tried to relieve the the French.
British attackes the Germans northwest of Verdun. -
Germany establishes Naval blockade around Britain. Germany announced that their submarines could sink any ship.
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President Wilson asked Congress to declare war. United States enters the war on the side of the allies
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Vladimir Ilyich Lenin seizes power.
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Russia and Germany signed the Treaty of Brest-Litovsk, which ended the war between them
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The Allies and Germany enter battle. The Allies had roughly 350 tanks, which they used to break through Germany's lines. 2 million American soldiers arrive and begin advancing toward Germany