Answer: Thebes
Explanation: Nearly 3,500 years ago, Thebes was the largest city in the world. Many of its awesome monuments are still standing today. Thebes is unquestionably one of the great cities of the ancient world. It was massive and we're talking massive from about 2000 BC onwards. For hundreds and hundreds of years, this was the seat of power in ancient Egypt. One of the reasons it prospered was because of its location on the valley of the fertile Nile River and its proximity to important trade routes.