The historical overview of the region begins in the preclassical period with the Chupícuaro tradition, very important in Mesoamerica. This tradition is characterized by its advanced ceramic industry and its complex religious expressions, which indicate at an early consolidation of a group in power. The Chupícuaro tradition was established along the banks of rivers and spread to almost the entire Guanajuato territory. Chupícuaro disappeared at about 350 AD., to allow the second tradition of advanced farmers.
