Quote Originally Posted by Folgore View Post
As I understand it, Alexandria grew to be larger than Carthage in little over one generation and to the largest city in the world in just over a century. As for Rome though, you are probably right.
Well, if you search for this book in Google Books (or Google Scholar): Settlements of the Ptolemies: city foundations and new settlement in the Hellenistic world

Then at page 96 you will find a estimated population of Alexandria in mid-third century BC: 25000-75000 inhabitants (If I understood the page correctly)

Not exactly the largest city, I think.