grew into a small regional state out of the consolidation of the surrounding Coyotlatelco sites. The settlement was roughly three to six square kilometers in size with a gridded urban plan and a relatively large population. The complexity of the main plaza was especially distinct from other Coyotlatelco sites in the area, as it had multiple ball courts and pyramids. The Toltec culture, as it is understood during its peak, can be tied directly to Tula Chico; after the site was burned and abandoned at the end of the Epiclassic period, Tula Grande was soon constructed bearing strong similarities 1.5 kilometers to the south. It is during the Early Postclassic period that Tula Grande and its associated Toltec culture would become the dominant force in the broader region. Archaeology Some archaeologists, such as Richard Diehl, argue for the existence of a Toltec archaeological horizon characterized by certain stylistic traits associated with Tula, Hidalgo and extending to other cultures and polities in Mesoamerica. Traits associated with this horizon are include the Mixtec-Puebla style of iconography, Tohil plumbate ceramic ware, and Silho or X-Fine Orange Ware ceramics. The presence of stylistic traits associated with Tula in Chichén Itzá is also taken as evidence for a Toltec horizon. The nature of interaction between Tula and Chichén Itzá has been especially controversial, with scholars arguing for either military conquest of Chichén Itzá by the Toltec, Chichén Itzá establishing Tula as a colony, or only loose connections between the two. Whether the Mixteca-Puebla art style has any meaning is also disputed. A contrary viewpoint is argued in a 2003 study by Michael E. Smith and Lisa Montiel, who compare the archaeological record related to Tula Hidalgo to those of the polities centered in Teotihuacan and Tenochtitlan. They conclude that relative to the influence exerted in Mesoamerica by Teotihuacan and Tenochtitlan, Tula's influence on other cultures was negligible and was probably not deserving of being defined as an empire, but more of a kingdom. While Tula does have the urban complexity expected of an imperial capital, its influence and dominance were not very far reaching. Evidence for Tula's participation in extensive trade networks has been uncovered; for example, the remains of a large obsidian workshop. Material culture at Tula Grande At its height, Tula Grande had an estimated population of as many as 60,000 and covered 16 square kilometers of hills, plains, valleys, and marsh. Some