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On May 7, 1915, a german u-boat torpedoed the british boat lusitania which held many americans, 128 american died.
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Summer of 1916: US doubled its military in case it had to join the war.
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Jan 1917, Germany wanted Mexico to join the war in exchange for lost territory in Texas, New-Mexico, and Arizona, angering America.
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Jan 1917, Germany declared it would sink all allied merchant ships.
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March 1917, Russia withdrew from the war because it went under a revolution to turn it democracy. This weakens the alliance.
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1917- Czar Nicholas II, leader of Russian Empire, gave up his throne. Russia now had to withdraw from the war.
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March 1917, Germany sank 4 US merchant ships in a short period of time, killing 36 people.
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April 2nd 1917, The US joined the war.
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1917: War department created two divisions of African-American combat units. They were still treated unfairly, since they had to train separately. However, the French treated them as equals.
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May 18 1917, The US military had 5 million people added to it. Now the biggest military on Earth.
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May 1917: General John J. Pershing named supreme commander of the American Expeditionary Force. The American soldiers were welcomed into France with cheering.
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1918- The treaty of Brest-Litovsk was signed by Germany and Russia. As a result of this treaty Russia lost territory to the Germans. Germany won land and now could advanced.
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Spring 1918: the AEF was prepared for battle. General Pershing refused to let the French and British build up their army with US soldiers.
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March 1918- Germans launched a massive attack along the Western Front.
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June 1918, Germans hammered at Allied lines. They pushed the Allies back 40 miles of Paris. Now, it looked as if Germany might win the war.
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June 1918: The AEF helped turn back a German offensive at Chateau-Thierry on Marne River east of Paris. For the next 3 weeks, American forces fought their way through the forest against a solid wall of German machine-gun firing. Americans and French fought back German attacks on Allied forces and stopped the German offensive. This fight turned the tide of war.
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September 1918: 500,000 american soldiers fought and defeated the Germans at Saint Mihiel. Later 1 million soldiers joined the allies in the Battle of Argonne Forest.
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4 October 1918: German government asks for armistice to the President Wilson, he agreed but under some conditions, Germany should take their troops out of Belgium and France.
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October 1918: The ethnic territories within the Ottoman empire start breaking apart and they decided to become independent.
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November 1918: The battle of Argonne Forest finished in November with the Allies pushing back the Germans.
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9 November 1918: Germany was declared a republic and they agreed in the terms of the armistice.
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11 November 1918: War has ended
