Chalco was a complex pre-Columbian Nahua altepetl or confederacy in central Mexico. It was divided into the four sub-altepetl of Tlalmanalco/Tlacochcalco, Amaquemecan, Tenanco Texocpalco Tepopolla and Chimalhuacan, which were themselves further subdivided into altepetl tlayacatl, each with its own tlatoani (king). Its inhabitants were known as the Chalca. In the 14th century and early 15th century, flower wars were fought between the Chalca and the Aztecs. Serious war erupted in 1446. According… (More on Chalco)