Society of the Mongol Empire influences. Genghis Khan authorized the use of paper money shortly before his death in 1227. It was backed by precious metals and silk. The Mongols used Chinese silver ingot as a unified money of public account, while circulating paper money in China and coins in the western areas of the empire such as Golden Horde and Chagatai Khanate. Under Ögedei Khan the Mongol government issued paper currency backed by silk reserves and founded a Department which was responsible for destroying old notes. In 1253, Möngke established a Department of Monetary affairs to control the issuance of paper money in order
Mongol invasions of Vietnam to come in person, Kublai detained his envoy, Dao-tu Ki, in 1293. Kublai's successor Temür Khan (r.1294-1307), finally released all detained envoys, settling for a tributary relationship, which continued to the end of the Yuan. The Champa Kingdom decided to accept the supremacy of the Yuan dynasty as well. A tributary relationship continued for some time, but Champa disappears from Yuan records before 1300. The king of Champa made the act of vassalage to the Mongols. Mongol invasions of Vietnam The Mongol invasions of Vietnam or Mongol-Vietnamese War refer to the three times that the Mongol Empire and its chief