Which cities were the largest ones in the Roman Empire?

Which cities were the largest ones in the Roman Empire?

Answer:

The largest cities in the Roman Empire were the cities of Rome and Alexandria, of which both had over a million inhabitants, which would not occur again in Europe until the 19th century. Other cities such as Antioch, Carthage, and Corinth also had a large population of the time, usually around 500,000 inhabitants.