article: Diocletian
links: Eastern Roman Empire Domitian Maximian Galerius Crisis of the Third Century Praetorian Prefect Asia Minor Roman province Adriatic Sremska Mitrovica Constantine the Great Polytheism Balkans Milan Dalmatia Sassanid dynasty Danube Eboracum Florence Constantinople Mediterranean Roman Emperor Roman emperor Aquileia Vojvodina Belgrade Western Roman Empire Rhine Serbia Scottish people Constantius Chlorus Trier Illyria York Turkey Byzantium Abdication Split Alps Split, Croatia