Aztec


 * Built capital of Tenochtitlan in the Valley of Mexico
 * Built twin pyramids and wide causeways to the island
 * Orange and black Cholula polychrome pottery was imported here
 * Grew crops on floating gardens called chinampas
 * The calpolli was the basic kinship unit
 * Traded copper axes and cacao beans in Tlatelolco, the principal marketplace
 * Pochteca traders also served as executive spies
 * The calmecac saw nobles educated in astronomy and religious duties