Before revision: Historian Averil Cameron regards as undeniable the Byzantine contribution to the formation of medieval Europe, and both Cameron and Dimitri Obolensky recognise the major role of Byzantium in shaping Orthodoxy, which in turn occupies a central position in the history, societies and culture of Greece, Romania, Bulgaria, Russia, Georgia, Serbia and other countries..
After revision: Some scholars focused on the positive aspects of Byzantine culture and legacy, French historian Charles Diehl described the Byzantine Empire by saying:Historian Averil Cameron regards as undeniable the Byzantine contribution to the formation of medieval Europe, and both Cameron and Dimitri Obolensky recognise the major role of Byzantium in shaping Orthodoxy, which in turn occupies a central position in the history, societies and culture of Greece, Romania, Bulgaria, Russia, Georgia, Serbia and other countries..