Question: Who has been designated as the first Emperor of the city that was the center of imperial life in the empire the term west comes from in early fifth century?

<P0-S0> For almost a thousand years, Rome was the most politically important, richest and largest city in Europe. <P0-S1> Around 100 CE, it had a population of about 450,000, and declined to a mere 20,000 during the Early Middle Ages, reducing the sprawling city to groups of inhabited buildings interspersed among large areas of ruins and vegetation. <SEP> <P1-S0> The ambitious Octavian built a power base of patronage and then launched a campaign against Mark Antony. <P1-S1> However, civil war flared again when the Second Triumvirate of Octavian, Lepidus and Mark Antony failed. <P1-S2> At the naval Battle of Actium off the coast of Greece, Octavian decisively defeated Antony and Cleopatra. <P1-S3> Octavian was granted a series of special powers including sole "imperium" within the city of Rome, permanent consular powers and credit for every Roman military victory, since all future generals were assumed to be acting under his command. <P1-S4> In 27 BC Octavian was granted the use of the names "Augustus" and "Princeps", indicating his primary status above all other Romans, and he adopted the title "Imperator Caesar" making him the first Roman Emperor. <SEP> <P2-S0> brunswick is a town in rensselaer county, new york, in the united states. <P2-S1> the municipality was originally settled in the early 18th century. <P2-S2> during its history, it had been part of albany county, rensselaerswyck, and troy, before its incorporation in 1807. it is bordered on the west by the city of troy; on the north by schaghticoke and pittstown; on the east by grafton; and on the south by poestenkill and north greenbush. <P2-S3> the population was 11,941 at the 2010 census. <P2-S4> the source of the town's name is not certain, though some claim it comes from the source of its first inhabitants from the province of brunswick-lüneburg in germany. <SEP> <P3-S0> The Eastern Mediterranean was home to the highly urbanized cultures that had Greek as their common language (owing to the older empire of Alexander the Great and of the Hellenistic successors), whereas the West was much more rural in its character and more readily adopted Latin as its common language. <P3-S1> After the fall of the Western Roman Empire, Western and Central Europe were substantially cut off from the East where Byzantine Greek culture and Eastern Christianity became founding influences in the Arab / Muslim world and among the Eastern and Southern Slavic peoples. <P3-S2> The geopolitical divisions in Europe that created a concept of East and West originated in the Roman Empire. <P3-S3> Roman Catholic Western and Central Europe, as such, maintained a distinct identity particularly as it began to redevelop during the Renaissance. <P3-S4> Even following the Protestant Reformation, Protestant Europe continued to see itself as more tied to Roman Catholic Europe than other parts of the perceived civilized world. <SEP> <P4-S0> in japanese, they are usually referred to as bushi (武士?, [bu.ɕi]) or buke (武家?). <P4-S1> according to translator william scott wilson: "in chinese, the character 侍 was originally a verb meaning "to wait upon" or "accompany persons" in the upper ranks of society, and this is also true of the original term in japanese, saburau. <P4-S2> in both countries the terms were nominalized to mean "those who serve in close attendance to the nobility", the pronunciation in japanese changing to saburai. <P4-S3> according to wilson, an early reference to the word "samurai" appears in the kokin wakashū (905–914), the first imperial anthology of poems, completed in the first part of the 10th century.