True o false Aztec was the greatest city built

It’s true the Aztec empire is one of the most greatest cities built because they did many things that have greatly effected us even til this day for an example their language, Nahuatl, was partly absorb into the English language. Along with the invention of the complex calendar, creating artificial islands on lakes, and their famous temples and pyramids. They are also well-known for their agriculture and then introducing irrigation.

Government taxes ? i guess