 Complete the following phrase:  Oghul Qaimish, the widow of Güyük Khan, ruled as regent over the Mongol realm from 1249 to 1251. In 1250 the French diplomats André de Longjumeau, Guy de Longjumeau, and Jean de Carcassonne arrived at her court located along the Emil River on the Kazakh-Chinese border, bearing gifts and representing their sovereign Louis IX of France, who desired a 