first world ward By fer Period: Mar 1, 1890 to Mar 1, 1920 first world war Jan 1, 1914 beging of the first world war Jul 28, 1914 austria-hungary declared war on serbia May 7, 1915 lusitania was sank by germans Jan 1, 1916 germans tried to break through at the battle of verdum Jan 19, 1917 zimmerman telegram send to the german ambassador in mexico Mar 15, 1917 tsar nicholas abdicated Jan 8, 1918 14 points of woodrow wilson Nov 11, 1918 sind of the agrement of peace called armistice Nov 11, 1918 end of the first world war Nov 30, 1918 kaiser wilhelm 2 abdicate Jan 1, 1919 lloyd george mejor player at the paris peace conference Jan 1, 1919 clemenceau mejor player at the paris peace conference Jun 28, 1919 signed of the treaty of versailles