Question

B. Write a short composition in English comparing and contrasting Mexico City today and Mexico City of long ago (Tenochtitlan).

Answer 1

Okay, so I am thinking you actually studied or was supposed to study the City of Mexico now and then. If you study then it will be much easier. I won't be able to write this for you because money is time and time is money but here are some things that can help.

The population of Mexico City then and now.
The geographical facts of Mexico City Then and Now (ex. does it have the same rivers it had long ago or did it dry out)
The Way People Dress then and now
The Way Buildings are Built with
The Way Buildings look
etc...