“…Economic as well as demographic factors affected urban development. Moreno (1970) illustrates three contrasting regional patterns within the hegemonic radius of Mexico City: (1) the archetypal case of Puebla, which dominated its economic hinterland, centralized the administrative, religious, educational, commercial, and productive functions of the region, sapped the autonomy of smaller centers, and attracted an Indian labor force to its peripheral barrios (Marin-Tamayo, 1960;Bazant, 1964); (2) the parallel cases of Orizaba and Cordoba, which grew in symbiosis less than twenty miles apart-Orizaba as a transport, processing, and manufacturing center," Cordoba as a commercial and agricultural storage center; (3) the atypical case of the Bajio, a prosperous agricultural and mining region supporting an active network of specialized towns with neither of the largest cities, Guanajuato or Queretaro, achieving primate domination.…”