Hi, I want to be able to connect civil service farms together. I understand that one of them has to be near a body of water. How do I get civil service? I have been told that rivers connect cities together and thus take away the need to build roads between cities. If this is true, is this meaning that roads have to be connected to rivers or does the river just have to be somewhere within the boundaries of or between the two cities? Not clear on that. One more question. Please tell me what the potion icon represents. This has to do with the question. Sometimes a resource can't be produced when the icon for that resource is actually showing on that tile. Why? For example, why can't food be produced (not counting farms that don't need a river connected to it, like rice farms) on some tiles that have a bread icon on them?