Genghis Khan
As a ruler, Genghis lowered taxes and got rid of taxes for doctors, teachers and priests.  He created the first international postal system.  His empire was not known to be greedy with their loot; instead he would spread the wealth among the conquering Mongolians.  Temujin eradicated torture, and held no prisoners; instead he merely killed his enemies.  In doing so, he became respected.  He completely re-made the feudal system to disregard people’s ethnicity and instead based it on loyalty and accomplishments.  He gave his people religious freedom, unlike empires that limited their people to one religion.