Chichen Itza
Sylvanus G. Morley proposed that after the Maya buildings in Chichen Itza were constructed, the leaders of Chichen Itza, the Itza, abandoned Chichen Itza. After they abandoned Chichen, the Itza wandered for a time, found a renegade group of Toltecs led by Kukulcan, and subsumed them, learning new crafts and traditions in the process. The Itza, ruled by Kukulcan, then returned to Chichen Itza and constructed the ‘mexicanized’ sites of Chichen Itza, which were based on Tula Hidalgo's sites. By migration, the Toltecs supposedly became the kings of Chichen Itza, leading to similarities between the two sites.