What are the main Aztec tribes?

The main Aztec tribes, also known as the Mexica, were primarily composed of the Mexica people who founded Tenochtitlan, along with other allied tribes such as the Tlaxcalans, who were notable adversaries of the Mexica, and the Acolhua and Tepanecs, who were part of the Triple Alliance that formed the basis of the Aztec Empire. The Mexica, originally a nomadic group, formed a powerful empire through conquest and alliances, dominating Mesoamerica until the Spanish conquest in the 16th century.