Mongols were highly tolerant of most religions, and typically sponsored several at the same time. At the time of Genghis Khan in the 13th century, virtually every religion had found converts, from Buddhism to Christianity and Manichaeanism to Islam. To avoid strife, Genghis Khan set up an institution that ensured complete religious freedom, though he himself was a shamanist. Under his administration, all religious leaders were exempt from taxation, and from public service.[1] Mongol emperors were known for organizing competitions of religious debates among clerics, and these would draw large audiences.
Initially there were few formal places of worship, because of the nomadic lifestyle. However, under Genghis's successor Ögedei, several building projects were undertaken in he Mongol capital of Karakorum. Along with palaces, Ogedei built houses of worship for the Buddhist, Muslim, Christian, and Taoist followers. The dominant religions at that time were Shamanism, Tengriism and Buddhism, although Ogodei's wife was a Christian.[2] In later years of the empire, three of the four principal khanates embraced Islam, as Islam was favored over other religions.[3][4][5] The Yuan Dynasty mainly adopted Tibetan Buddhism while there were other religions practiced in the east of the Mongol Empire.