The revolution associated with the overthrow of the Tsar in Russia is the Russian Revolution of 1917. This pivotal event consisted of two key phases: the February Revolution, which led to the abdication of Tsar Nicholas II and the end of the Romanov dynasty, and the October Revolution, in which the Bolsheviks, led by Vladimir Lenin, seized power. The revolution was rooted in widespread dissatisfaction with the monarchy, economic hardship, and the impact of World War I. The Russian Revolution ultimately resulted in the establishment of a communist government and significantly altered the political landscape of Russia, inspiring revolutionary movements worldwide.