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.–Austrian Peace Treaty (1921) formed the nucleus of the Austro-Hungarian Empire – was defeated by the Allied Powers, one of which was the United States of America. The US government declared war on Austria-Hungary on December 7, 1917. At the end of the war in 1918, Austria-Hungary disintegrated and Austria was established as an independent 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 Austrian government was concluded. Although the US government was among the signatories of that treaty, the Senate refused to