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June 28 - Archduke Franz Ferdinand, prince to the Austria-Hungary throne, is assassinated in Sarajevo by a Serbian named Gavrilo Princip

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June 28 - Archduke Franz Ferdinand, prince to the Austria-Hungary throne, is assassinated in Sarajevo by a Serbian named Gavrilo Princip

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July 24 - Tsar Nicholas II secretly orders the partial mobilization of Russian forces.

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July 24 - Tsar Nicholas II secretly orders the partial mobilization of Russian forces.

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August 1 - Germany declares war on Russia

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August 1 - Germany declares war on Russia

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August 3 - Germany declares war on France as part of the Schlieffen Plan.

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August 3 - Germany declares war on France as part of the Schlieffen Plan.

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August 4 - Germany invades Belgium. Britain declares war on Germany. 

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August 4 - Germany invades Belgium. Britain declares war on Germany. 

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November 11 - The Ottoman Empire declares war on the Allies. 

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November 11 - The Ottoman Empire declares war on the Allies. 

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April 6 - The United States enters the war, declaring war on Germany. 

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April 6 - The United States enters the war, declaring war on Germany. 

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October 3 - The governments of Germany and Austria-Hungary forward a note to US president Woodrow Wilson, requesting an armistice and peace negotiations.

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October 3 - The governments of Germany and Austria-Hungary forward a note to US president Woodrow Wilson, requesting an armistice and peace negotiations.

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November 11 - Germany agrees to an armistice and the fighting comes to an end at 11am on the 11th day of the 11th month. 1919 

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November 11 - Germany agrees to an armistice and the fighting comes to an end at 11am on the 11th day of the 11th month. 1919 

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June 28 - The Treaty of Versailles is signed by Germany and World War I comes to an end.

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June 28 - The Treaty of Versailles is signed by Germany and World War I comes to an end.