Tenochtitlan

Timeline

1. 1451–1455Tenochtitlan · Mexican PlateauMoctezuma I led the Triple Alliance (Tenochtitlan, Texcoco, Tlacopan) in continued southern campaigns, conquering regions such as Oaxaca and Veracruz by the 1450s. Large numbers of war captives flowed in, scaling up sacrificial offerings at the great temple, while the imperial tribute system grew ever more complete.
2. c. 1454–1460Templo Mayor · TenochtitlanThe Templo Mayor underwent its fourth or fifth expansion in this period, with marked increases in height and scale; the north–south causeways, aqueducts across Lake Texcoco, and granary systems continued to expand, supporting the daily life of over 200,000 residents. The calendar-round New Fire ceremony of 1454 was grandly celebrated in the city.