What is the background of Mexico city

Hello there,

What is the background of Mexico city

Mexico city was founded as Tenochtitlan in 1324 and a century later became the dominant city-state of the Aztec Triple Alliance

The city now known as Mexico City was founded as Tenochtitlan in 1324 and a century later became the dominant city-state of the Aztec Triple Alliance, formed in 1430 and composed of Tenochtitlan, Texcoco, and Tlacopan.