ni akoole ninu ISO 3166-2, apa opagun ISO 3166 ti International Organization for Standardization (ISO) tejadesiwe to setumo awon amioro fun oruko awon ipinsabe koko awon orile-ede.ItokasiISO 3166.. 
Byzantium is today distinfẹ́ra from ancient Rome proper òmìnirafar as it was oriented towards Greek culture, characterterised by Christianity Rather than Roman polytheism, and was predominantly Greek-Speaking rather than Latin-Speaking.As the distinction between Roman Empire and Byzantine Empire is largely a modern convention, it is not possible to persona a date of túntion; however, important points are the Roman Empire's Administrative Division into western and eastern Halves in 285 by Emperor Diocletian (R.. 