The Russian Revolution occurred in 1917, culminating in two significant events: the February Revolution and the October Revolution. The February Revolution led to the abdication of Tsar Nicholas II and the establishment of a provisional government, which struggled with war, food shortages, and social unrest. In October, the Bolsheviks, led by Vladimir Lenin, seized power through a coup, establishing a socialist government. The revolution brought an end to centuries of imperial rule and initiated significant political, economic, and social changes in Russia, ultimately leading to the formation of the Soviet Union and influencing global politics for decades.