Explanation:

• April 22, 2020, marks the 150th birth anniversary of V I Lenin. He was one of the greatest theoreticians of Left politics after Karl Marx. He was an excellent strategist and tactician, who led the first socialist revolution in 1917, in Russia. 
  The October Revolution was the second and the last major part of the Russian Revolution of 1917. 
• The October Revolution was waged not the immediate backdrop of the Great Depression and World War I.
• It is also known as the Bolshevik Revolution. This Military Revolution Committee was led by Trotsky and they were able to garner the support of Petrograd Garrison and Kronstadt sailors. 
• The Prime Minister ordered the arrest of Bolshevik leaders in October, this led to an armed uprising in Petrograd on 25th October 1917. 
• The revolution was led by the Bolsheviks who occupied the government buildings on 25th October. The following day Winter Palace was captured. 
• It was the seat of the Provisional Government which was established after overthrowing Tsars. Bolsheviks later went on to become the Communist Party of Soviet Union. The new Government was led by Vladimir Lenin.