Paquimé
The largest identified settlement in Northern Chihuahua is known today as Paquimé or Casas Grandes. Casas Grandes was probably a backwater until about 1200 CE when pochteca (traders) from the Aztec empire or other Mesoamerican states to the south turned it into a major trading center. A diametrically opposed theory is that Casas Grandes was established by the elites of the Anasazi from the north who were fleeing their homeland during its decline. A third theory speculates that Casas Grandes is a community that grew over time to dominate its region and adopted some religious and social customs from the civilizations of Mesoamerica. The language the inhabitants of Casas Grandes spoke is unknown. Given the Mesoamerican influence on Casas Grandes Nahuatl was probably widely spoken but it was not the primary language of the people.