Shi Huangdi's treatment of opponents diminish his success because he used to kill hundreds of educated people that read Confucianism papers.
Shi Huangdi is the founder of the Chinese Qin dynasty that unified China. He has quite a degree of success with the unification of the territories, the construction of roads to increase the trade and the sort of stability during his tenure.
City-states built up armies/military strength and strong thick walls. Sargon's creation of his empire changed Mesopotomia because it made it all under one ruler. It also make Mesopotomia stronger.
