 Complete the following phrase:  In March 1917, the abdication of Tsar Nicholas II led to the Russian Provisional Government MarchJuly 1917, who then proclaimed the Russian Republic SeptemberNovember 1917. Later in the October Revolution, the Bolsheviks seizure of power against the Provisional Government resulted in their establishment of the Russian Soviet Federative Socialist Republic 19171991, yet parts of Russia remained occupied by the counter-revolutionary White Movement of anti-communists who had united to form the White Army to fight the Russian Civil War 19171922 against the Bolshevik government. Moreover, despite the WhiteRed civil war, Russia remained a combatant in the Great War that the Bolsheviks had quit with the Treaty of Brest-Litovsk which then provoked the 