The main events and the effects of the February Revolution:

• February, 1917: There was food shortage in the workers' quarters.
• 22nd February, 1917: Lockout of a factory happened on the right bank of the river Neva.
• 23rd February, 1917: the workers of 50 factories went on strike in sympathy.
• 24th and 25th February, 1917: Protesters came back to the streets and were dispersed by the police to impose curfew. Government suspended the Duma. Politicians criticised this step of government.
• 26th February, 1917: Protestors returned to the streets in force.
• 27th February 1917: Protestors destroyed the headquarters of the police.
• 2nd March, 1917: Finally, the Tsar gave up his throne. The Provincial Government was formed by Soviet leaders and Duma leaders to run the country.

The main events and effects of the October Revolution:

• September, 1917: Lenin started discussing a revolt against the Government.
• 16th October, 1917: Lenin persuaded the Petrograd Soviet and Bolshevik Party members for a socialist seizure of power. This led to the formation of a Military Revolutionary Committee.
• 24th October, 1917: The October revolution started. Two buildings of Bolshevik newspapers were seized by the military men of the Government. On the same day, Pro- government troops were sent to protect the Winter Palace and take over the telephone and telegraph offices.
• The Military Revolutionary Committee arrested the ministers and seized the government offices.
• The revolutionaries took over the different military points. In the following year, the Bolsheviks became the only party to participate in the elections to the All Russians Congress of Soviet. Thus, Russia became a one-party state.