60 million.....is your answer
Abraham Oretelius aka. Abraham Wortels is a cartographer born in April 14, 1527 in Belgium. He is also a dealer in maps, books, and antiquities who has published the first modern atlas known as the "Theatre of the World".
Answer:
Romans preferred a much more regular, rational layout and plan. They inherited the Greek tradition of city planning on rectangular grids but they refined it to include more open space and central public focus: the forum, a kind of city center where the most important civic buildings, temples and monuments would be located.