The Treaty of Versailles was a peace treaty that was signed in that city at the end of World War I by more than fifty countries. This treaty officially ended the state of war between the Germany of the Second Reich and the Allies of the First World War. It was signed on June 28, 1919 in the Gallery of Mirrors of the Palace of Versailles, exactly five years after the Sarajevo attack in which Archduke Francisco Fernando was killed, the direct cause of the First World War. Although the armistice was signed months earlier (November 11, 1918) to end hostilities on the battlefield, it took six months of negotiations at the Paris Peace Conference to conclude the peace treaty. The Treaty of Versailles entered into force on January 10, 1920.
