Ecatepec (Spanish: [ekateˈpek] ), officially Ecatepec de Morelos, is a municipality in the State of Mexico situated in the north of the Greater Mexico City urban area. The municipal seat is San Cristóbal Ecatepec.
The city of Ecatepec is co-extensive with the municipality, comprising 99% of the total population of 1,645,352. It is Mexico's third most-populous municipality after Tijuana and the 16 boroughs of Mexico City. It is also the most-populous suburb of Greater Mexico City.
Moctezuma Xocoyotzin (c. 1466 – 29 June 1520), retroactively referred to in European sources as Moctezuma II, and often simply called Montezuma, was the ninth emperor of the Aztec Empire (also known as the Mexica Empire), reigning from 1502 or 1503 to 1520. Through his marriage with Queen Tlapalizquixochtzin of Ecatepec, one of his two wives, he was also the king consort of the altepetl.
The first contact between the indigenous civilizations of Mesoamerica and Europeans took place during his reign. He was killed during the initial stages of the Spanish conquest of the Aztec Empire when Hernán Cortés, the Spanish conquistador, and his men seized the Aztec capital of Tenochtitlan. During his reign, the Aztec Empire reached its greatest size. Through warfare, Moctezuma expanded the territory as far south as Xoconosco in Chiapas and the Isthmus of Tehuantepec, and incorporated the Zapotec and Yopi people into the empire. He changed the previous meritocratic system of social hierarchy and widened the divide between pipiltin (nobles) and macehualtin (commoners) by prohibiting commoners from working in the royal palaces.
Tlapalizquixochtzin was an Aztec noblewoman and Queen regnant of the Aztec city of Ecatepec. She was also a consort of Moctezuma II.