Uzbek Khan was the leader of the Golden Horde and he was the person responsible in making Islam the official state religion. Under his rule, the non-Muslims were not forced to accept Islam. However, he forced the Mongol elites to accept Islam. There was a period of religious tolerance where the Christians were allowed to keep their churches and the local pagans were allowed to practice their own beliefs. The Christians were even allowed to build church in the capital city of Sarai. Their churches were exempted from paying taxes and jizyah and became richest institutions during this time.