A study of historical, political and religious thoughtof the early Mongols undertaken during the last fewyears has provided a thesis that, during the periodof their world domination in the thirteenth andfourteenth centuries, they initiated an originaluniversal concept with the purpose of substantiatingand justifying the world's largest land empire.Furthermore, this concept was so developed that itconstituted a cohesive theory that can be calledTenggerism or Heavenism.