Peace treaty the United Nations headquarters. Famous examples include the Treaty of Paris (1815), signed after Napoleon's defeat at the Battle of Waterloo, and the Treaty of Versailles, formally ending the First World War conflict between Germany and the Western Allies. This is held to have ended World War I completely, but in fact that did not happen until the Allies concluded peace with the Ottoman Empire in 1920 through the Treaty of Sèvres. The Versailles treaty is possibly the most notorious of peace treaties, in that it is "blamed" by many historians for the rise of National Socialism in Germany and
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