The devastating force of the eruption of Xitle completely buried and destroyed Cuicuilco and Copilco, both significant civic and religious cities. The survivors have scattered across Mesoamerica, many settling in and around Teotihuacan. The rapid infusion results in accelerated growth of Teotihuacan and leads to the adoption of new technologies as Teotihuacan establishes itself as a seat of power in the region.