ABSTRACT
January 1912: The Bolsheviks formally established themselves as a separate party.
1August 1914:Russia entered the FirstWorldWar againstAustria-Hungary,Germany and the Ottoman Empire.
2 March 1917: Abdication of Tsar Nicholas II after demonstrations and strikes in Petrograd (as St Petersburg had been renamed in 1914); a Provisional Government, headed by Prince Georgii Lvov, took power.
