who won world war 1

The winner of World War I was the Allies. The Allies were led by France, the United Kingdom, Russia (until 1917), Italy (after 1915), and the United States (after 1917). They defeated the Central Powers, which included Germany, Austria-Hungary, and the Ottoman Empire. The war ended with the signing of an armistice on November 11, 1918, which marked the defeat of the Central Powers. The peace treaty that followed, the Treaty of Versailles, was harsh on Germany and contributed to significant social and economic upheaval in the country afterward.