Roman Empire, Ancient Rome, Roman Emperor, Imperator, Roman civil wars, Romulus Augustulus, Constantine XI, Roman Emperor (Principate), Roman Emperor (Crisis of the Third Century), Roman Emperor (Dominate), Roman Emperor (Late Empire), Equestrian order, Cursus honorum, Military of ancient Rome, Roman army, Roman Navy, Roman province, Grain supply to the city of Rome, Imperial cult (ancient Rome), Classical Latin, Latin, Vulgar Latin, Greek language, Koine Greek, Phoenician language, Aramaic language, Syriac language, Coptic language, Celtic languages, Culture of ancient Rome, Social class in ancient Rome, Roman cuisine, Latin literature, Roman art, Roman architecture, Roman school, Roman currency, Roman provincial coins, History of the Roman Empire, Crisis of the Third Century, Diocletian, Tetrarch, Decline of the Roman Empire, Migration Period, Byzantine Empire