Services come from buildings called Urban Centers, which can't be directly built but are generated automatically based on the Urbanization of your States. All buildings you build produce a little bit of Urbanization in the target State, but some provide a lot more than others. If you focus mo...
Services are a non-tradeable good, so they cannot leave your home market. Access to services is based on Infrastructure. So for example, you might have lots of services being produced in New York, but if you don't build railroads out to California, the people in California will have very...