The Aztecs originated in the middle part of the Valley of Mexico, and it was from this site that their empire spread to other, more southern parts of the region. These zones extend from the coast of Chiapas all the way to Guatemala, occupying the modern territories of the states of Mexico, Veracruz, Guerrero, Puebla, and Oaxaca as well as parts of Chiapas.
This led to the fall of the Aztec Empire.
Because Aztec auxiliary troops accompanied Spanish colonizers on the early expeditions that mapped New Spain, many towns, cities, and regions in Mexico were given their Nahuatl names when they were founded. This is especially true in central Mexico, which was the heart of the Aztec empire. However, Aztec place names can also be found in other parts of the country.
Mesoamerica encompassed an area that reached from the middle of what is now Mexico to what is now Costa Rica. Both the Maya and the Aztecs had their homelands in this region. The land of the Incas was situated in the Andes Mountains, which run parallel to the western coast of South America.