At the same time, the success of Christianity was rooted in the Roman Empire, in its territorial extent, in the mobility that it promoted, in its towns and its cultural mix. From Pliny’s Bithynia to Perpetua’s Carthage, Christianity spread from its small-scale origins in Judaea largely because of the channels of communication across the Mediterranean world that the Roman Empire had opened up and because of the movement through those channels of people, goods, books and ideas.
