Treaty of Versailles, peace document signed at the end of World War I by the Allied and associated powers and by Germany in the Hall of Mirrors in the Palace of Versailles, France, on June 28, 1919; it took force on January 10, 1920. A brief treatment of the Treaty of Versailles follows. For full treatment, see international relations: Peacemaking, 1919–22. When the German government asked U.S. Pres. Woodrow Wilson to arrange a general armistice...