History of Russia and by the 18th century, the Tsardom of Russia had grown to become the Russian Empire, stretching from eastern Poland to the Pacific Ocean. Peasant revolts were common, and all were fiercely suppressed. Russian serfdom was abolished in 1861, but the peasants fared poorly and often turned to revolutionary pressures. In the following decades, reform efforts such as the Stolypin reforms, the constitution of 1906, and the State Duma attempted to open and liberalize the economy and political system, but the tsars refused to relinquish autocratic rule or share their power. The Russian Revolution in 1917 was triggered by a
Iranians in Russia and the Mountain Jews, who descend from Persian Jews from Iran. People from the former and contemporary boundaries of Iran have a long history in the territory of what is modern-day Russia, stretching back thousands of years. Throughout history, the Caucasus region was usually incorporated into the Iranian world, and large parts of it were ruled by empires based in modern-day Iran for a time span encompassing many centuries, or were under its direct influence. From the early 16th century up to including the early 19th century, Transcaucasia and a part of the North Caucasus (namely Dagestan), were ruled by