'Mukhsha Ulus' or 'Naruçat Duchy' (
Tatar language: ''Muxşa olısı'' or ''Naruçat bäklege'') was a subdivision of
Golden Horde at the place of modern
Mordovia,
Penza Oblast and
Tambov Oblast of
Russia in 13th-15th centuries with the capital in
Mukhsha. The main territory of the ''
ulus'' was situated between rivers
Sura and
Tsna. The previous population were
Mordvins and
Burtas. Population was mainly
Mişär Tatars, and
Moksha Mordvins. In
1313-
1367 years coined own money. Population was mostly agricultural. Some were cattle-breeders and craftsmen. In
1360 TaÄŸay beg conquered the ulus. It became a semi-independent duchy. In
1367 Mamai conquered that duchy. In the end of 14th century duchy declined and in the beginning of 15th century
Russians conquered it.
Naruçat Duchy was a place where Mişär Tatars and Mişär dialect were formed.