Augustus
Augustus' reign laid the foundations of a regime that lasted, in one form or another, for nearly fifteen hundred years through the ultimate decline of the Western Roman Empire and until the Fall of Constantinople in 1453. Both his adoptive surname, Caesar, and his title "Augustus" became the permanent titles of the rulers of the Roman Empire for fourteen centuries after his death, in use both at Old Rome and at New Rome. In many languages, "Caesar" became the word for "Emperor", as in the German "Kaiser" and in the Bulgarian and subsequently Russian "Tsar" (sometimes Csar or Czar). The cult of "Divus Augustus" continued until the state religion of the Empire was changed to Christianity in 391 by Theodosius I. Consequently, there are many excellent statues and busts of the first emperor. He had composed an account of his achievements, the "Res Gestae Divi Augusti", to be inscribed in bronze in front of his mausoleum. Copies of the text were inscribed throughout the Empire upon his death. The inscriptions in Latin featured translations in Greek beside it, and were inscribed on many public edifices, such as the temple in Ankara dubbed the "Monumentum Ancyranum", called the "queen of inscriptions" by historian Theodor Mommsen.
History of the Roman Empire
Now sole ruler of Rome, Octavian began a full-scale reformation of military, fiscal and political matters. The Senate granted him power over appointing its membership and over the gov
lic, and as such he operated within the existing constitutional machinery. He thus rejected titles that Romans associated with monarchy, such as "rex" ("king"). The dictatorship, a military office in the early Republic typically lasting only for the six-month military campaigning season, had been resurrected first by Sulla in the late 80s BC and then by Julius Caesar in the mid-40s; the title "dictator" was never again used. As the adopted heir of Julius Caesar, Augustus had taken "Caesar" as a component of his name, and handed down the name to his heirs of the Julio-Claudian dynasty. With Vespasian, one of the first emperors outside the dynasty, "Caesar" evolved from a family name to a formal title.