Mordovian Autonomous Soviet Socialist Republic

The Mordovian Autonomous Soviet Socialist Republic (Мордовская Автономная Советская Социалистическая Республика, Mordovskaya Avtonomnaya Sovetskaya Sotsialisticheskaya Respublika; Мордовскяй Автономнай Советскяй Социалистическяй Республикась, Mordovskjaj Avtonomnaj Sovetskjaj Socialističeskjaj Respublikaś; Мордовской Автономной Советской Социалистической Республикась, Mordovskoj Avtonomnoj Sovetskoj Socialističeskoj Respublikaś) was an autonomous republic of the Russian SFSR within the Soviet Union. It is now known as the Republic of Mordovia, a federal subject of Russia.

History
The Mordovian Autonomous Soviet Socialist Republic was established on December 20, 1934 after the transformation of Mordovian Autonomous Oblast in Kuybyshev Krai. After Kuybyshev Krai was itself transformed into Kuybyshev Oblast, the Mordovian ASSR was separated from it and subordinated directly to the Russian Soviet Federative Socialist Republic.

On December 7, 1990, the Supreme Soviet of the Mordovian ASSR adopted the Declaration on the legal status of the Mordovian Republic, which transformed the republic into the Mordovian Soviet Socialist Republic. The republic was renamed the Republic of Mordovia on January 25, 1994.