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1914- Archduke Francis Ferdinand of Austria-Hungary was assassinated. The assassination sparked World War I.

1915- German U-boats sunk the ocean liner Lusitania.

1916- More than one million soldiers were killed in the battle of the Somme.

1917- The United States ended its policy of neutrality and entered the war.

1918- An armistice ended the war on November 11.

1919- Delegates to the Paris Peace Conference drafted the Treaty of Versailles, which blamed Germany for the war.

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13y ago

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