Mongol monk
Buddhism first arrived in Mongolia via the Himalayas and Tibet. Tibetan Buddhism became the official religion of the Yuan dynasty led by Kublai Khan. Following the fall of the Yuan dynasty in 1368, Tengriism became the main religion in the eastern Eurasian steppes until the 16th century. During the Qing dynasty, Buddhism once again became the main religion, both in Outer Mongolia and Inner Mongolia.