ol over Greece.
The Roman Empire had begun more formally when Emperor Augustus (63 BC–AD 14; known as Octavian before his throne accession) founded the Principate in 27 BC. This was a monarchy system which was headed by an emperor holding power for life, rather than making himself dictator like Julius Caesar had done, which had resulted in his assassination on 15 March, 44 BC. At home, Emperor Augustus started off a great programme of social, political and economic reform and grand-scale reconstruction of the city of Rome. The city became dotted with impressive and magnificent new buildings, palaces, fora and basilicae. Augustus became a great and enlightened patron of the arts, and his court was attended by such poets as Virgil, Horace and Propertius. His rule also established the Pax Romana, a long period of relative peace which lasted approximately 200 years. Following his rule were emperors such as Caligula, Nero, Trajan, and Hadrian, to name a few. Roman emperor Nero was well known for his extravagance, cruelty, tyranny, and the myth that he was the emperor who "fiddled while Rome burned" during the night of 18 to 19 July 64 AD. The Antonine Plague of 165–180 is believed to have killed as much as one-third of the population.
Roman dominance expanded over most of Western Europe and the shores of the Mediterranean, though its influence through client states and the sheer power of its presence was wider than its formal borders. Its population surpassed one million inhabitants. For almost seven hundred years, Rome was the most politically important, richest, and largest city in the Western world. After the Empire started to decline and was split, it lost its capital status to Milan and then to Ravenna, and was surpassed in prestige by the capital of the Eastern Roman Empire, Constantinople, whose Greek inhabitants continued through the centuries to call themselves Roman.
Middle Ages
The Bishop of Rome, called the Pope, was
