Theconstitutional reforms of Augustus were a series of laws that were enacted by theRoman EmperorAugustus between 30 BC and 2 BC, which transformed theConstitution of the Roman Republic into theConstitution of the Roman Empire. The era during which these changes were made began when Augustus defeatedMark Antony andCleopatra at theBattle of Actium in 31 BC, and ended when theRoman Senate granted Augustus the title "Pater Patriae" in 2 BC.

Eschewing the open anti-elitism exhibited by Julius Caesar and Mark Anthony, Augustus modified the political system in this settlement, making it palatable to the senatorial classes of Rome.

In 28 BC Augustus invalidated the emergency powers of the civil war era and in the following year announced that he was returning all his powers and provinces to the Senate and the Roman people. After senatorial uproar at this prospect, Augustus, feigning reluctance, accepted a ten-year responsibility for the "disordered provinces". As a result, Augustus maintained hisimperium over the provinces where the great majority of Rome's soldiery were stationed.

The second part of the settlement involved a change of title. Firstly, he would becomeprinceps. Roughly translating as "first in order", this title traditionally meant leader of the Senate and assured the right to speak first in meetings. The title lent plausibility to his claim to be the restorer of republican institutions vitiated during the civil wars, and as Oxford historian Craig Walsh notes in his seminal workClassics in Room 39: "Princeps was pretty much the same idea as the latinPrimus Inter pares" ("First among equals").^[2]

In 27 BC on the motion ofL. Munatius Plancus, he was also given the honorific cognomenAugustus, which made his full nameImperator Caesar divi filius Augustus.Imperator stressed military power and victory, emphasising his role as commander-in-chief.Divi filius, translating as ‘son of the divine’, showed that whilst he himself didn't have a "god complex" and wasn't an autocrat, he was on the shoulders of the gods, enhancing his legitimacy.^{[citation needed]} Caesar forged a connection to the deifiedJulius, illustrating where he got his authority. This would have gone down well with Rome's urban poor. Lastly,Augustus was a stamp of religious authority. Meaning "the illustrious" or "the majestic", it associated the ruler with Rome's traditions, gave him extra-constitutional status, served as a demarcation from "Octavian's reign of terror", and was not too suggestive of autocracy likerex.

The first settlement put him in an ideal political position. As summed up by theRes Gestae:

"After this time I excelled all in influence [auctoritas], although I possessed no more official power than others"^[3]

The second settlement was announced in 23 BC, in the wake of Augustus' ill health. Aware that his holding of the consulship inhibited his powers of patronage and may have created resentment among Rome's rising political stars (he had maintained the powerful leadership position for the last ten years), Augustus gave up the position of consul completely. However, where power was concerned, the compensation he received was more than adequate:

• Whilst not literally being a consul, he maintained the right to a seat on the consuls' platform at the front of the Curia.
• He was awardedius primae relationis, the right to speak first in a Senate meeting.
• He was assured the right to summon a meeting of the Senate, a useful tool for policy-making and upholding theres publica illusion.

Instead of relying on the powers of the consulship which he gave up, he instead relied on thetribunicia potestas, or tribunician power, which enabled him to:

1. propose laws to the Senate whenever he wanted.
2. veto any laws he wanted.
3. grant amnesty to any citizen accused of crime.^[4]

Whilst effectively giving Augustus legislative supremacy, the honour of tribunician power had popular connotations, harking back to the traditions of the republic, and was thus not offensive to the aristocracy. As well asleader of the Senate, Augustus was now guardian of the freedom and welfare of the Roman people.

Beyond Rome, Augustus was granted a form of greater proconsular imperium.^[4] Along with governing his own provinces and armies, this position meant that he could effectively override the orders of any other provincial governor in the Roman Empire, which, as theEdicts of Cyrene^[5] indicate, he was quite prepared to do.

Normally during republican times, the powers Augustus held even after the Second Settlement would have been split between several people, who would each exercise them with the assistance of a colleague and for a specific period of time. Augustus held them all at once by himself, and with no time limits; even those that nominally had time limits were automatically renewed whenever they lapsed.^[6]

These reforms also meant that credit was given to Augustus for each subsequent Roman military victory after this time, because the majority of Rome's armies were stationed in imperial provinces commanded by Augustus through thelegatus who were deputies of the princeps in the provinces. Moreover, if a battle was fought in asenatorial province, Augustus's proconsularimperium maius allowed him to take command of (or credit for) any major military victory. This meant that Augustus was the only individual able to receive atriumph, a tradition that began with Romulus, Rome's first King and first triumphant general.Lucius Cornelius Balbus was the last man outside Augustus's family to receive this award, in 19 BC.^[7] Tiberius, Augustus's eldest stepson by Livia, was the only other general to receive a triumph for victories in Germania in 7 BC.^[8]

In 19 BC, the Senate granted Augustus a form of general consularimperium, which was probablyimperium consulare maius, like the proconsular powers that he received in 23 BC. Like his tribune authority, the consular powers were another instance of gaining power from offices that he did not actually hold.^[9] In addition, Augustus was allowed to wear the consul's insignia in public and before the Senate,^[10] as well as to sit in the symbolic chair between the two consuls and hold thefasces, an emblem of consular authority.^[9]

On 6 March 12 BC, after the death ofLepidus, he additionally took up the position ofpontifex maximus, the high priest of theCollege of Pontiffs, the most important position in Roman religion.^[a][b] On 5 February 2 BC, Augustus was also given the titlepater patriae, or "father of the country".^[15][16]

• History of the Constitution of the Roman Republic
• Constitution of the Roman Kingdom
• Constitution of the Roman Empire
• Constitution of the Late Roman Empire

• Abbott, Frank Frost (1901).A History and Description of Roman Political Institutions. Elibron Classics.ISBN 0-543-92749-0.{{cite book}}:ISBN / Date incompatibility (help)
• Bowersock, G. W. (1990). "The Pontificate of Augustus". InRaaflaub, Kurt A.; Toher, Mark (eds.).Between Republic and Empire: Interpretations of Augustus and his Principate. Berkeley: University of California Press. pp. 380–394.ISBN 978-0-520-08447-6.
• Eck, Werner (2003).The Age of Augustus. Wiley-Blackwell.ISBN 978-0-631-22957-5.
• Eder, Walter (2005), "Augustus and the Power of Tradition", in Galinsky, Karl (ed.),The Cambridge Companion to the Age of Augustus, Cambridge Companions to the Ancient World, vol. 13, Cambridge, MA; New York: Cambridge University Press,ISBN 978-0-521-80796-8
• Gruen, Erich S. (2005). "Augustus and the Making of the Principate". In Galinsky, Karl (ed.).Cambridge Companion to the Age of Augustus. Cambridge Companions to the Ancient World. Vol. 33. Cambridge, MA; New York: Cambridge University Press.ISBN 9780521807968.
• Keppie, Lawrence (1998).The making of the Roman Army: from Republic to Empire. Norman, OK: University of Oklahoma Press.ISBN 978-0-8061-3014-9.
• Mackay, Christopher S. (2004).Ancient Rome: A Military and Political History. Cambridge University Press.ISBN 978-0-521-80918-4.
• Scullard, H. H. (1982) [1959].From the Gracchi to Nero: A History of Rome from 133 B.C. to A.D. 68 (5th ed.). London; New York: Routledge.ISBN 0-415-02527-3.

• 1st century BC in law
• 1st century BC in the Roman Republic
• Augustus
• Constitutions of ancient Rome
• Reform in the Roman Republic

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