That is where they believed the Gods lived
The Aztec civilization is one of the most important civilizations to appear in Mexico.
Aztecs
The Aztec Civilization qualifies as such.
The Mayan civilization.
Cenotes
That would be the Aztec or Mexica (spelled me-shi-ca) civilization.
The Mexicans or the Aztecs built the temples of Mexico City
The ancient city of Mexico-Tenochtitlan, founded by the Aztec Civilization on March 13, 1321
The Chimu were an indigenous civilization in Peru, the Olmec were an ancient civilization in Mesoamerica, and the Toltec were a civilization that preceded the Aztecs in central Mexico. Each of these civilizations made important contributions to art, architecture, and culture in their respective regions.
Cenotes would be very important sources of groundwater in arid or semi-arid landscapes where surface water is scarce. Regions with porous limestone bedrock, such as the Yucatan Peninsula in Mexico, are particularly reliant on cenotes for freshwater due to the lack of surface rivers and lakes.
There were several of them, but the most important would be the Aztec civilization.
Olmecs