He reformed the Roman system of taxation, developed networks of roads with an official courier system, established a standing army, established the Praetorian Guard, created official police and fire-fighting services for Rome, and rebuilt much of the city during his reign. He probably died from natural causes, although there were unconfirmed rumors that his wife Livia poisoned him.He was succeeded as Emperor by his adopted son (also stepson and former son-in-law) Tiberius.Augustus dramatically enlarged the Empire, annexing Egypt, Dalmatia, Pannonia, Noricum, and Raetia; expanding possessions in Africa; expanding into Germania; and completing the conquest of Hispania.Beyond the frontiers, he secured the Empire with a buffer region of client states and made peace with the Parthian Empire through diplomacy.Philippus never had much of an interest in young Octavius.Because of this, Octavius was raised by his grandmother, Julia, the sister of Julius Caesar.
Philippus claimed descent from Alexander the Great, and was elected consul in 56 BC.
The Triumvirate was eventually torn apart by the competing ambitions of its members.
Lepidus was driven into exile and stripped of his position, and Antony committed suicide following his defeat at the Battle of Actium by Octavian in 31 BC.
Upon his adoption, Octavius assumed his great-uncle's name Gaius Julius Caesar.
Roman citizens adopted into a new family usually retained their old nomen in cognomen form (e.g., Octavianus for one who had been an Octavius, Aemilianus for one who had been an Aemilius, etc.).