Yohualtepec
Yohualtepec was a tributary centre in the Mixteca Baja, a region of rugged valleys where the lands of Oaxaca, Puebla and Guerrero meet. The Codex Mendoza names it among the towns that sent tribute to the Triple Alliance. Their payments included turquoise objects and bundles of turquoise stones, materials obtained through far-reaching networks of exchange. Such records reveal the ties between Mixtec communities and the rulers of central Mexico before the Spanish conquest.