Chiconautla, situated on the northeastern shore of Lake Texcoco and the southern edge of the Teotihuacan Valley, lay at an important juncture for east-west exchange in the Basin of Mexico with connections to asfar away as the Gulf Coast. Recently, we completed an INAA study on ceramics from Chiconautla to examine marketing and exchange patterns from A. D. 950 to 1521. We present these data and contextualize them in light of contexts excavated at the site by George C. Vaillant, in particular materials from an Aztec noble residence he called “Casa Reales.” We also examine historical information regarding Chiconautla’s role in Aztec society as it existed at the eve of Spanish conquest. We evaluate the site’s particular position at the crossroads of important trade routes in light of recent models of Aztec markets and exchange and what these patterns say about shifting political affiliations in this critical region.

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