U.S. History World War 1 By mariabuzyan 1850 Nationalism 1890 Militarism 1900 Imperialism 1914 Treaty of Versailles 1914 Alliances Jun 28, 1914 The assassination of Archduke Franz Ferdinand and his wife, Sophie Jul 5, 1914 Germany's Blank Check to Austria-Hungary Jul 28, 1914 World War 1 Begins May 7, 1915 Sinking of the Lusitania. 1917 Zimmerman Telegram Jan 31, 1917 Germany's resumption of unrestricted submarine warfare Apr 2, 1917 U.S. entry into the war and her impact on it. Nov 11, 1918 Effects of WWI 1923 Dawes Plan 1928 Young Plan 1929 Great Depression Jul 1, 1934 Rise of Hitler