The document summarizes the history of Russia leading up to the Russian Revolution in 1917. It describes the authoritarian rule of the Czars from Ivan the Terrible to Nicholas II, and the social and economic problems facing Russia at the time, including peasant uprisings and involvement in World War I. The revolution occurred when Nicholas II abdicated the throne in February 1917 due to public unrest. A provisional government took over but faced opposition from the Bolsheviks led by Vladimir Lenin, who seized power in October 1917 and established communist rule, taking Russia out of World War I.