Mongol Empire to some extent for murder. Any resistance to Mongol rule was met with massive collective punishment. Cities were destroyed and their inhabitants slaughtered if they defied Mongol orders. Under "Yassa", chiefs and generals were selected based on merit. The empire was governed by a non-democratic, parliamentary-style central assembly, called kurultai, in which the Mongol chiefs met with the great khan to discuss domestic and foreign policies. Kurultais were also convened for the selection of each new great khan. Genghis Khan also created a national seal, encouraged the use of a written alphabet in Mongolia, and exempted teachers, lawyers, and artists
Mongol invasions of Tibet to station in Tibet in 1254-55 possibly to suppress war-like tribes in Tibet. Hulegu appointed his representative, Kokochu, in Tibet in mid-1250s while marching towards Iran. Since then, the Ilkhans had had possessions in Tibet. In 1265 Qongridar ravaged the Tufan/mDo-smad area, and from 1264 to 1275 several campaigns pacified the Tibetan and Yi peoples of Xifan around modern Xichang. By 1278 Mongol myriarchies: tumens and postroads reached through mDo-khams as far west as Litang. Tibet was subdued to the Mongol Empire under Mongolian administrative rule, but the region was granted with a degree of political autonomy. Kublai Khan would