IntroductionAztec (ăzˈtĕkˌ) [key], Indian people dominating central Mexico at the time of the Spanish conquest. Their language belonged to the Nahuatlan subfamily of Uto-Aztecan languages. They arrived in the Valley of Mexico from the north toward the end of the 12th cent. and until the founding of their capital, Tenochtitlán (c.1325) were a poor, nomadic tribe absorbing the culture of nearby states. For the next century they maintained a precarious political autonomy while paying tribute to neighboring tribes, but by alliance, treachery, and conquest during the 15th and early 16th cent. they became a powerful political and cultural group. To the north they established hegemony over the Huastec, to the south over the Mixtec and Zapotec and even ventured as far as Guatemala. Their subjugation of the people of Tlaxcala in the mountains to the east was bloody but only intermittent, and the Tlaxcala people later became allies of the Spanish against the Aztec. Only in the west, where the Tarascan Indians severely defeated them, did the Aztec completely fail to conquer.
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