Chapter 25 Timeline By kaylalovesf1 Jun 28, 1914 Serbian Nnationalist assassinates Archduke Franz Ferdinand Jul 28, 1914 World War 1 Sep 5, 1914 1st Battle of the Marne Oct 31, 1914 Ottoman Empire joins the Central Powers Feb 19, 1915 Battle of Gallipoli Apr 22, 1915 2nd battle of Ypres Apr 24, 1915 Allies invade Turkey Apr 24, 1915 Armenian Genocide Apr 26, 1915 Italy joins the Triple Entente May 7, 1915 German submarine sinks the Lusitania Feb 21, 1916 Battles of Verdun and the Somme May 4, 1916 Sussex Pledge Jun 10, 1916 Arab Rebellion against Ottoman Empire Feb 22, 1917 February Revolution in Russia Apr 6, 1917 United States enters the War Oct 24, 1917 Battle of Caporetto Nov 2, 1917 Balfour Declaration on Jewish homeland in Palestine Nov 7, 1917 Civil War in Russia Nov 7, 1917 Bolshevik Revolution in Russia Mar 3, 1918 Treaty of Brest-Litovsk Oct 29, 1918 Revolution in Germany Jun 28, 1919 Treaty of Versailles Jul 24, 1923 Treaty of Lausanne recognizes Turkish independence