Anahuac (Aztec)
Anahuac (Nahuatl: Ānāhuac ) is an ancient name for a Mesoamerican, particularly Aztec, area or areas, usually identified as located within or even coterminous with the Valley of Mexico. It can also refer to the former lake basins around Mexico City, often including the Lerma and Pánuco river systems.
Read more about Anahuac (Aztec): 1911 Encyclopædia Britannica Article