Aztec Empire
I don't know what Teotihuacan is, but I do know that Tenochtitlan was the capitol of a group Mesoamerican Indians that is now Mexico City, the capitol of Mexico.
Tenochtitlan
It was originally built by the Aztecs in 1325 on an island of Lake Texcoco.
Mexico city lies on the Aztec capitol of Tenochtitlan.
Mexico City's original name was Tenochtitlan.
Tenochtitlan located on an Island in Lake Texcoco, in the Valley of Mexico....was a city-state founded in 1325...It's ruins are in the central part of today's Mexico City
Teotihuacan.
Mexico city
Tenochtitlan and the Aztecs are not the exact same thing. Tenochtitlan was the capital city of the Aztec empire. The Aztecs built the city of Tenochtitlan in the location where Mexico City is currently located.
After conquering the Aztecs, Cortes renamed the city of Tenochtitlan to Mexico City.
The Mexica capitol was Mexiko-Tenochtitlan which was founded in the lake of Texcoco in 1325.
Present-day Mexico city is located atop the ruins of ancient Tenochtitlan.