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The assassination of Archduke Franz Ferdinand of Austria, heir presumptive to the Austro-Hungarian throne, and his wife Sophie, Duchess of Hohenberg, occurred on 28 June 1914 in Sarajevo when they were mortally wounded by Gavrilo Princip
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one month to the day after Archduke Franz Ferdinand of Austria and his wife were killed by a Serbian nationalist in Sarajevo, Austria-Hungary declares war on Serbia, effectively beginning the First World War.
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Germany declares war on Russia. France and Belgium begin full mobilization
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Germany declares war on France, and invades neutral Belgium.
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The first British troops land in France.
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Great Britain and France declare war on Austria-Hungary. Serbia is invaded by Austria-Hungary.
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- Japan declares war on Germany.
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Austria invades Serbia
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Germany declares the waters surrounding British Isles to be a war zone in which ships can be sunk without warning.
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The Armenian Genocide, also known as the Armenian Holocaust, was the Ottoman government's systematic extermination of 1.5 million Armenians, mostly citizens within the Ottoman Empire
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Italy signs the Treaty of London
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the British ocean liner Lusitania is torpedoed without warning by a German submarine off the south coast of Ireland
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The Battle of the Somme also known as the Somme Offensive,
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Britannic sinks in the Aegean Sea after a mine explodes, killing 30 people
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the Battle of Rafa occurs near the Egyptian border with Palestine.
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1st major strike of the Russian "February Revolution" starts at the giant Putilov factory in Petrograd
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The United States formally declared war against Germany and entered the conflict in Europe.
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The first American troops land in France
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China declares war on Germany & Austria
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The Fourteen Points was a statement of principles for peace that was to be used for peace negotiations in order to end World War
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First recorded case of Spanish flu at Funston Army Camp, Kanas; start of worldwide pandemic killing 50-100 million
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The Armistice of 11 November 1918 was the armistice that ended fighting on land, sea and air in World War I between the Allies and their opponent, Germany. Previous armistices had eliminated Bulgaria, the Ottoman Empire and the Austro-Hungarian Empire.
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A few months after the end of World War I, leaders from the Allied nations began a series of discussions that became known as the Paris Peace Conference to settle issues raised by the war and its aftermath.
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The Treaty ended the state of war between Germany and the Allied Powers
