chapter 23: war and revolution, 1914-1919 By alex bednarz Jan 1, 1882 triple alliance forms Jan 1, 1907 triple entente forms Jun 28, 1914 assasination of arch duke franz ferdinand members of the serbian ultra nationList organazTion known as the blackhand assasinated the heir to the austrLian hingarian throan in the bosnian city pf sarajevo. Aug 1, 1914 governments use propraganda Aug 30, 1914 battle of tannenberg Sep 6, 1914 battle of marne May 7, 1915 lusitania sank by german forces Sep 1, 1915 bulgaria joins triple alliance Dec 1, 1915 airplanes in the war Dec 1, 1916 rasputin assasinated. Jan 1, 1918 germany agrees to armistace Jan 1, 1919 treaty of versalis