The First World War
World War I, also known as the First World War, and (before 1939) the Great War, the War of the Nations, and the War to End All Wars, was a world conflict lasting from August 1914 to the final Armistice (cessation of hostilities) on November 11, 1918. The Allied Powers (led by Britain and France , and, after 1917, the United States ) defeated the Central Powers (led by the German Empire, Austria-Hungary and the Ottoman Empire), and led to the collapse of four empires and a radical change in the map of Europe . The Allied powers are sometimes referred to as the Triple Entente, and the Central Powers are sometimes referred to as the Triple Alliance.
