Question

What are some needs to establish a successful City?

Answer 1

A bit late than never but the book "Guns, Germs and Steel" by Jared Diamond reviews some possible answers to this.

Explanation:

Also why some peoples were more successful than others.

Access to fresh water.
A variety of wholesome easy to grow crops.
Defense from invaders.
Animals for food and labor.
Suitable Climate
Suitable building materials for homes.

Are some possibilities.