The document discusses the Russian Revolution from 1905-1917. It led to the overthrow of the Russian monarchy and establishment of the Soviet Union. Key events included "Bloody Sunday" in 1905 which sparked unrest, World War I which further weakened Russia, and Vladimir Lenin leading the Bolshevik Revolution in 1917 after promising to withdraw from the war. Lenin established communist rule but was later succeeded by Joseph Stalin who set up a totalitarian state and command economy.