section_path: Political and social organization/Triple Alliance and Aztec Empire
section_name: Triple Alliance and Aztec Empire
paragraph_text: Triple Alliance and Aztec Empire
  
  The Aztec Empire was ruled by indirect means. Like most European empires, it was ethnically very diverse, but unlike most European empires, it was more of a hegemonic confederacy than a single system of government. Ethnohistorian Ross Hassig has argued that the Aztec empire is best understood as an informal or hegemonic empire because it did not exert supreme authority over the conquered lands; it merely expected taxes to be paid and exerted force only to the degree it was necessary to ensure the payment of taxes. It was also a discontinuous empire because not all dominated territories were connected; for example, the southern peripheral zones of Xoconochco were not in direct contact with the center. The hegemonic nature of the Aztec empire can be seen in the fact that generally local rulers were restored to their positions once their city-state was conquered, and the Aztecs did not generally interfere in local affairs as long as the tax payments were made and the local elites participated willingly. Such compliance was secured by establishing and maintaining a network of elites, related through intermarriage and different forms of exchange.
  
  Nevertheless, the expansion of the empire was accomplished through military control of frontier zones, in strategic provinces where a much more direct approach to conquest and control was taken. Such strategic provinces were often exempt from taxation. The Aztecs even invested in those areas, by maintaining a permanent military presence, installing puppet rulers, or even moving entire populations from the center to maintain a loyal base of support. In this way, the Aztec system of government distinguished between different strategies of control in the outer regions of the empire, far from the core in the Valley of Mexico. Some provinces were treated as subject provinces, which provided the basis for economic stability for the empire, and strategic provinces, which were the basis for further expansion.
  
  Although the form of government is often referred to as an empire, most areas within the empire were organized as city-states, known as altepetl in Nahuatl. These were small polities ruled by a hereditary leader (tlatoani) from a legitimate noble dynasty. The Early Aztec period was a time of growth and competition among altepetl. Even after the confederation of the Triple Alliance was formed in 1427 and began its expansion through conquest, the altepetl remained the dominant form of organization at the local level. The efficient role of the altepetl as a regional political unit was largely responsible for the success of the empire's hegemonic form of control.