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Germany resumed unrestricted submarine warfare.
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Arthur Zimmermann proposed that Mexico join the war on Germany's side.
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Angry Americans started to have thoughts of war after German U-boats sunk three American merchant ships as well as the Lusitania.
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Military defeats and food shortages led to an uprising that became the Russian Revolution.
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Wilso[n asked cogainst the Cengress to declare war antral Powers
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Russia and the Central Powers signed a peace treaty called the Treaty of Brest-Litovsk
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The outraged public overthrew Tsar from power.
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Wilson asked congress to declare war against the Central Powers. His goals was to fight.
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The first Battle of Marne began.
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Germany fought hand to hand combat with American troops in Chateau-Thierry.
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American units evicted German troops from Belleau Wood.
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The second Battle of Marge began.
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The battle of the Argonne Forest began.
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The head of the German government sent Wilson a note requesting an armistice based on The Fourteen Points.
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German delegate reluctantly signed the Treaty of Versailles.
