- Soviet Union, Russia, Union of Soviet Socialist Republics, USSR - a former communist country in eastern Europe and northern Asia; established in 1922; included Russia and 14 other soviet socialist republics (Ukraine and Byelorussia an others); officially dissolved 31 December 1991
--1 is a kind of country, state, land
--1 is a part of Eurasia
--1 has parts:Soviet Socialist Republic; Soviet Russia, Russia, Russian Soviet Federated Socialist Republic; Caspian, Caspian Sea - Soviet Russia, Russia, Russian Soviet Federated Socialist Republic - formerly the largest Soviet Socialist Republic in the USSR occupying eastern Europe and northern Asia
--2 is a kind of Soviet Socialist Republic
--2 is a part of
--2 has members:Soviet Union, Russia, Union of Soviet Socialist Republics, USSR; Eurasia Komi; Cheremis, Cheremiss, Mari; Ingrian, Inger, Ingerman; Mordva, Mordvin, Mordvinian; Veps, Vepse, Vepsian; Vogul, Mansi; Russian - Russia - a former empire in eastern Europe and northern Asia created in the 14th century with Moscow as the capital; powerful in 17-18th centuries under Peter the Great and Catherine the Great when Saint Petersburg was the capital; overthrown by revolution in 1917
--3 is a kind of empire
--3 is a part of Eurasia
--3 has part: Muscovy- Russia, Russian Federation - a federation in northeastern Europe and northern Asia; formerly Soviet Russia; since 1991 an independent state
--4 is a kind of country, state, land
--4 is a part of Eurasia
--4 is a member of Commonwealth of Independent States, CIS
--4 has parts: --4 has particulars: European Russia; Asian Russia - Russia, Russian Federation - a federation in northeastern Europe and northern Asia; formerly Soviet Russia; since 1991 an independent state