chapter 27 By cogdilc20 Period: Jan 1, 1861 to Dec 31, 1871 Germany and Italy United Period: Jul 28, 1914 to Nov 11, 1918 World War 1 Aug 1, 1914 Germany declared war on Russia Jan 1, 1916 Britian introduced the tank May 1, 1916 only large naval battle off the coast of denmark Nov 17, 1917 Bolsheviks overthrew provsional government Jan 1, 1918 president wilson spoke to congress Nov 1, 1918 German delegations signed an armistice