The International Bank for Reconstruction and Development, generally known as the World Bank.
A collective term for the non-Russian, and largely Muslim, republics between the River Volga (Idel in Tatar) and the southern Ural mountains. The region is inhabited by various Tatar and Finno-Ugric peoples and came under the dominion of the Russian Empire after the fall of the Kazan khanate in 1552. The connections between the subjugated people led to episodes of collective action against their Russian overlords, culminating in the formation of a Tatar-led Idel-Ural Federation in 1917 in opposition to the Bolsheviks. The success of the Bolsheviks over their adversaries in the Russian Civil War led to the conspicuous division of the Idel-Ural state and the foundation in its place of five ethnically-based successor regions (roughly from west to east, Mordova, Mari El, the Chavash Republic, Tatarstan and Bashkortostan) between 1918 and 1930. Today these republics cover the important Volga-Ural oilfield and are largely industrialized. There are no serious aims to recreate the Idel-Ural unit.