Toc: Content: Introducing the principate -- A Mediterranean empire, addendum -- Government without bureaucracy, addendum -- Enemies of Rome by M. Goodman, addendum by M. Goodman -- An underdeveloped economy, addendum -- The land, addendum -- Supplying the Roman empire, addendum -- The social hierarchy, addendum -- Family and household, addendum -- Social relations, addendum -- Religion, addendum by R.L. Gordon -- Culture, addendum by J. Elsner and G. Woolf -- Conclusion.