This talk will review what I believe are the exceptional characteristics of the city of Teotihuacan in Mesoamerica of the Classic period: a huge planned settlement with an urban grid, a multiethnic society, a corporate organization. Teotihuacan, in Central Mexico, stands out as one of the largest pre-industrial urban sites, with characteristics that set this site apart as an exception in Mesoamerica.One of these characteristics is life in multifamily apartment compounds. Through my thorough ...