Moctezuma I was a great leader, probably the best of the Aztec rulers. He was a great military commander, but also politician and diplomat. Moctezuma I wanted to have everything under control in the empire, and also to put order in it and make a proper class system. This resulted in multiple reforms in the political, social, and economic spheres. Politically, Moctezuma I managed to form the Triple Alliance, managing to make an alliance with two other empires, sharing the land, resources, and rule, while maintaining the dominant power in it. He established himself as the absolute authority, so everyone had to notify him of everything that was considered important and he had to give permission for it to happen. Socially, he created the classes, setting up rules which people can be in what class, what kind of homes can they have, what objects they are allowed to visit, but also forbid mixing of the classes. Economically, he created aqueducts and much better developed agriculture and usage of the natural resources, while also developing the trade.
A. Genghis Khan was the supreme leader of the Mongols
Because he was a communist
Who were the Soldiers of Buffalo? No one knows for sure why, but the soldiers of the all-Black 9th and 10th Cavalry Regiments were dubbed by the Native Americans they met as "buffalo soldiers." One theory asserts that the nickname originated because the thick, curly hair of the soldiers resembled the fur of a buffalo.