The postclassic period (18 dic 900 año – 18 mar 1521 año)

Descripción:

one of the outstanding features of this cultural stage was the beginning of great internal and external migratory movements. Chichimec groups from Arid America penetrated Mesoamerica.
In that period one of the bases of the economy was agriculture and in some regions they had better conditions for the development of systems of irrigation that produced better agricultural results, as it was in the banks of the rivers and lakes. This period is marked by the emergence of large political systems marked by large cities such as Tula or Tenochtitlan

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