The buildings of Chichen Itza show a large number of architectural and iconographic elements that some historians have wanted to call Mexicanized. The truth is that it is visible the influence of cultures from central Mexico, and mixing with the Puuc style, from the upper peninsula, of Classic Maya architecture. The presence of these elements from the cultures of the plateau were conceived several years ago as a result of a mass migration or conquest of the Maya city by Toltec groups. However, recent studies suggest that may have been the cultural expression of a prestigious and widespread political system during the Early Postclassic in Mesoamerica.