Cities cannot be supported by the farms nearby and must be located near an easy place to ship goods. That was water for most of human history, until the train happened.
Small towns happen all over because of farming reasons, but even then access to trade was a consideration, but only secondary to close to farms. (which is to say if there was good farm land far from any way to trade there will still be a town someplace - you see this more with mines as mineral often are in places that are difficult to get to by trade, while farm countries implies enough water which implies rivers)
Small towns happen all over because of farming reasons, but even then access to trade was a consideration, but only secondary to close to farms. (which is to say if there was good farm land far from any way to trade there will still be a town someplace - you see this more with mines as mineral often are in places that are difficult to get to by trade, while farm countries implies enough water which implies rivers)