Religion in the Mongol Empire
The Mongols were highly tolerant of most religions during the early Mongol Empire, 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 Eastern Christianity and Manichaeanism to Islam. To avoid strife, Genghis Khan set up an institution that ensured complete religious freedom, though he himself was a Tengrist. Under his administration, all religious leaders were exempt from taxation, and from public service. Mongol emperors were known for organizing competitions of religious debates among clerics, and these would draw large audiences.
Persian miniature showing Ghazan's conversion from Buddhism to Islam
Alexander Nevsky standing near a Mongolian shaman in the Golden Horde. Painting by Henryk Siemiradzki.
Nestorian tombstone found in Issyk Kul, dated 1312.
Image of Tekuder who was a Christian convert to Islam.
Mahmud Ghazan was the seventh ruler of the Mongol Empire's Ilkhanate division in modern-day Iran from 1295 to 1304. He was the son of Arghun, grandson of Abaqa Khan and great-grandson of Hulegu Khan, continuing a long line of rulers who were direct descendants of Genghis Khan. Considered the most prominent of the il khans, he is perhaps best known for converting to Islam and meeting Imam Ibn Taymiyya in 1295 when he took the throne, marking a turning point for the dominant religion of the Mongols in West Asia: Iran, Iraq, Anatolia, and the South Caucasus.
Ghazan (center) was born as a Buddhist, and converted to Islam as part of a military agreement upon accession to the throne.
Ghazan as a child, in the arms of his father Arghun, standing next to Arghun's father Abaqa, mounted on a horse
Ghazan mounted on a horse.
Seal of Mahmud Ghazan, over the last two lines of his 1302 letter to Pope Boniface VIII. The seal was given to Ghazan by the sixth Great Khan (Emperor ChengZong of Yuan). It is in Chinese script: "王府定國理民之寶", which means "Seal certifying the authority of his Royal Highness to establish a country and govern its people". Overwritten on it vertically, are two lines in Mongolian using the old, Aramaic-based, Uyghur script. Vatican Archives.