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Francis Ferdinand assassinated at Sarajevo
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Kaiser William II promised German support for Austria against Serbia
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Austria declared war on Serbia
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Germany declared war on Russia
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Germany declared war on France and invaded Belgium. Germany had to implement the Schlieffen Plan.
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The first Zeppelin raid on Britain took place
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The “Lusitania” was sunk by a German U-boat
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The Germans captured Warsaw from the Russians
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Start of the Battle of Loos
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The Allies started the evacuation of Gallipoli
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Conscription introduced in Britain
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Start of the Battle of Verdun
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US President Wilson publicly warns Germany not to continue unrestricted submarine warfare policies
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David Lloyd George becomes Prime Minister of Britain.
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Germany again declares unrestricted submarine warfare.
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Tsar Nicholas II of Russia abdicates. Provisional government is declared.
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The United States passes the Selective Service Act empowering the Federal Government to draft men for the armed forces.
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The first wave of the American Expeditionary Force lands in France.
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President Woodrow Wilson declares his 14 points as the path to permanent world peace.
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Germans launch the first of five major offensives to win the war before American troops appear in the trenches. German advance is finally stopped in late June
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British and Australian troops stop the German advance near Amiens.
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President Wilson agrees to co-operate with Allies in sending "volunteer" troops into Russia.
