id author title date pages extension mime words sentences flesch summary cache txt en-wikipedia-org-9972 Russia - Wikipedia .html text/html 31741 4160 67 Ultimately Kievan Rus' disintegrated, with the final blow being the Mongol invasion of 1237–40[30] that resulted in the destruction of Kiev[31] and the death of about half the population of Rus'.[32] The invading Mongol elite, together with their conquered Turkic subjects (Cumans, Kipchaks, Bulgars), became known as Tatars, forming the state of the Golden Horde, which pillaged the Russian principalities; the Mongols ruled the Cuman-Kipchak confederation and Volga Bulgaria (modern-day southern and central expanses of Russia) for over two centuries.[33] During this period of rapid economic and social change, millions of people were sent to penal labor camps,[60] including many political convicts for their opposition to Stalin's rule; millions were deported and exiled to remote areas of the Soviet Union.[60] The transitional disorganisation of the country's agriculture, combined with the harsh state policies and a drought, led to the Soviet famine of 1932–1933,[61] which killed between 2 and 3 million people in the Russian SFSR.[62] The Soviet Union made the costly transformation from a largely agrarian economy to a major industrial powerhouse in a short span of time. ./cache/en-wikipedia-org-9972.html ./txt/en-wikipedia-org-9972.txt