World War I the war as being when the Versailles Treaty was signed in 1919, which was when many of the troops serving abroad finally returned home; by contrast, most commemorations of the war's end concentrate on the armistice of 11 November 1918. Legally, the formal peace treaties were not complete until the last, the Treaty of Lausanne, was signed. Under its terms, the Allied forces left Constantinople on 23 August 1923. After the war, the Paris Peace Conference imposed a series of peace treaties on the Central Powers officially ending the war. The 1919 Treaty of Versailles dealt with Germany and, building
U.S.–German Peace Treaty (1921) During World War I, the German Empire was defeated by the Allied Powers, one of which was the United States. The U.S. government declared war on Germany on April 6, 1917. At the end of the war in November 1918, the German monarchy was overthrown and Germany was established as a republic. In 1919, the victorious Allied Powers held a peace conference in Paris to formulate peace treaties with the defeated Central Powers. At the conference, a peace treaty with the German government was concluded. The U.S. government was among the signatories of that treaty, but the U.S. Senate refused