Build a massive port city with a population of at least 50,000 people. There are no land trade routes.
This scenario must be played with the wonderful Augustus mod which does away with the sprite limit factor.
No military activity but there are big demands from Caesar. Be sure to meet the requests in order to make the favour requirement.
You have 90 years to complete the assignment.
I re-uploaded this map due to an update in the Augustus mod on 14.11.20.