I am not sure if this is an old post. (I couldn't find anything). I have seen some videos where it seems that they dont build roads for what seems like a long time to me. With 3 or 4 cities most at or above size 5 and still not a single road even for troop movement. Should I only be build roads after cities get to a certain size or once the workers have little else to do? How does this change when using Roman Legions?