Teotihuacan’s culture and history are still largely mysterious. The civilization left massive ruins, but no trace has yet been found of a writing system and very little is known for sure about its inhabitants, who were succeeded first by the Toltecs and then by the Aztecs.
19th century Aztec couple. The last of the great MesoAmerican cultures were the Aztec, they were a Nahuatl-speaking people, who in the 15th and early 16th centuries, ruled a large empire in what is now central and southern Mexico. The Aztec are so-called from the word Aztlán.
After the rise of the Aztec Triple Alliance, the Tenochca Mexica (that is, the inhabitants of Tenochtitlan), assumed a senior position over their two allied cities — Tlatelolco and Tlacopan. Description from heritagedaily.com. I searched for this on bing.com/images