Am I hallucinating or did someone say that 4 is the max pop for all cities in this Scenario? If true then there is no point in building farms or most other improvements as there will be no workers for them? Was this for some computer modding reason that computer ignorant people like me don't understand? It isn't historical. After all, in American huge numbers of people moved to the big cities to work in the war industries, making those cities even larger.