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The armistice (cease fire) began on the 11th hour of the 11th day of the 11th month in 1918. (November, 11th).

The Treaty of Versailles formally ended the war on June 28th, 1919, exactly 5 years to the day after the assasination of Archduke Franz Ferdinand of Austria, which is widely accepted as the cause for World War I.

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15y ago

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