Book excerpt: After Monte Albán reveals the richness and interregional relevance of Postclassic transformations in the area now known as Oaxaca, which lies between Central Mexico and the Maya area and, as contributors to this volume demonstrate, achieved cultural centrality in pan-Mesoamerican networks. Large nucleated states throughout Oaxaca collapsed after 700 C.E., including the great Zapotec state centered in the Valley of Oaxaca, Monte Albán. Elite culture changed in fundamental ways as small city-states proliferated in Oaxaca, each with a new ruling dynasty required to devise novel strategies of legitimization. The vast majority of the population, though, sustained continuity in lifestyle, religion, and cosmology. Contributors synthesize these regional transformations and continuities in the lower Rio Verde Valley, the Valley of Oaxaca, and the Mixteca Alta. They provide data from material culture, architecture, codices, ethnohistoric documents, and ceramics, including a revised ceramic chronology from the Late Classic to the end of the Postclassic that will be crucial to future investigations. After Monte Albán establishes Postclassic Oaxaca's central place in the study of Mesoamerican antiquity. Contributors include Jeffrey P. Blomster, Bruce E. Byland, Gerardo Gutierrez, Byron Ellsworth Hamann, Arthur A. Joyce, Stacie M. King, Michael D. Lind, Robert Markens, Cira Martínez López, Michel R. Oudijk, and Marcus Winter.