Tula does not last as long as…

Tula does not last as long as other Mesoamerican dominions.

Around 1000, there had been problems created by the leeching of soil and the drying of the climate.

This had moved Chichimecas south from their drying homelands creating ethnic strife which eventually results in the city’s collapse.

Many of the living quarters appear to have been abandoned by 1150.