During its first two centuries, the empire saw as rulers, emperors of the Julio-Claudian, Flavian (who also built eponymous amphitheatre, known as the Colosseum) and Antonine dynasties.
Selama dua abad pertamanya, kekaisaran dipimpin oleh para kaisar dari dinasti Julio-Claudian, Flavia (yang juga membangun amfiteater eponim, dikenal sebagai Koloseum), dan Antonin.