The winners of World War I were the Allies, a coalition that included the United Kingdom, France, the United States, Japan, and Italy, among others. They defeated the Central Powers, which consisted mainly of Imperial Germany, the Austro-Hungarian Empire, and the Ottoman Empire
. The war lasted from 1914 until the Armistice on November 11, 1918, with the formal end marked by the Treaty of Versailles in 1919. The Allies' victory came after years of brutal trench warfare and massive casualties on both sides. The Central Powers were ultimately unable to sustain their war efforts, leading to their defeat and the abdication of Germany's Kaiser Wilhelm II
. In summary, the Allies won World War I, decisively ending the conflict and reshaping the political landscape of Europe and the world
