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The capital was Qashan city. Population was agriculturists, citizens was craftsmen and tradesmen. In castles was found foundries for iron and copper, clay cooking utensils. In 1391 it was occupied by ushkuyniki, Russian river pirates, and finally in 1399 by Muscovy troops. In 1438-1440 it was reabsorbed to Khanate of Kazan and all Bolghar lands were united again.