The history of Russia begins with that of the Eastern Slavs and the Finno-Ugric peoples. The state of Garðaríki ("the realm of towns"), which was centered in Novgorod and included the entire areas inhabited by Ilmen Slavs, Veps, and Votes, was established by the Varangian chieftain Rurik in 862 (the traditional beginning of Russian history). Kievan Rus', the first united East Slavic state, was founded by Rurik's successor Oleg of Novgorod in 882. The state adopted Christianity from the Byzantine Empire in 988, beginning the synthesis of Byzantine and Slavic cultures that defined Russian culture for the next millennium. Kievan Rus' ultimately disintegrated as a state because of the Mongol invasion of Rus' in 1237–1240 and the death of about half the population of Rus'.During that time, a number of regional magnates, in particular Novgorod and Pskov, fought to inherit the cultural and political legacy of Kievan Rus'.

After the 13th century, Moscow became a cultural center. By the 18th century, the Tsardom of Russia had become the huge Russian Empire, stretching from the Polish–Lithuanian Commonwealth eastward to the Pacific Ocean. Expansion in the western direction sharpened Russia's awareness of its separation from much of the rest of Europe and shattered the isolation in which the initial stages of expansion had occurred. Successive regimes of the 19th century responded to such pressures with a combination of halfhearted reform and repression. Russian serfdom was abolished in 1861, but its abolition was achieved on terms unfavorable to the peasants and served to increase revolutionary pressures. Between the abolition of serfdom and the beginning of World War I in 1914, the Stolypin reforms, the constitution of 1906, and State Duma attempted to open and liberalize the economy and politics of Russia but the tsars were still not willing to relinquish autocratic rule or share their power.