Complex sentence: Within four years, Ghazan began sending tributes to the Yuan court, appealed to other khans to accept Temür Khan as their overlord, and oversaw an extensive program of cultural and scientific interaction between the Ilkhanate and the Yuan dynasty in the following decades.
Split into simpler sentences: Within four years, Ghazan began sending tributes to the Yuan court and appealing to other khans to accept Temür Khan as their overlord. He oversaw an extensive program of cultural and scientific interaction between the Ilkhanate and the Yuan dynasty in the following decades.