Mesoamerica in the Postclassic Period (1240s)

Timeline

1. 1241–1245Valley of Mexico–Oaxaca corridor · MexicoObsidian, cocoa, cotton cloth, and featherwork circulated along valley–coast–Yucatán trade routes; city-states maintained vassal relationships through tribute and intermarriage, and the Postclassic long-distance exchange system became further institutionalized in the first half of the 1240s.
2. 1246–1250Around the Teotihuacan site and the Puebla highlands · State of MexicoCompetition among polities intensified over temple sacrifice, calendar reform, and military alliances; proto-Aztec polities expanded in the southeastern valley, clashing with Toltec traditions and local chiefdoms, laying the political groundwork for the later rise of the Triple Alliance.