The reign of the emperor Constantine (306-337) was as revolutionary for the transformation of Rome's Mediterranean empire as that of Augustus, the first emperor three centuries earlier. The abandonment of Rome signaled the increasing importance of frontier zones in northern and central Europe and the Middle East. The foundation of Constantinople as a new imperial residence and the rise of Greek as the language of administration previewed the establishment of a separate eastern Roman empire. | The Roman Revolution of Constantine by Raymond Van Dam, Paperback | Indigo Chapters