No More Learning

The Romans recognized this           generally, in so far as their original customs domain did not extend farther than the range of the Roman franchise and the limit of the customs was by no means coincident with the limits of the empire, so that a general imperial tariff was unknown: it was only by means of state-treaty that a total exemption from customs-dues in the client communities was secured for the Roman state, and in various cases at least favourable terms for the Roman
burgess.