Political power and authority: Augustus and the fall of the Republic (SACE Stage 2 Ancient Studies)
“Analyse the nature and transformation of political power and authority in Rome from the late Republic to the Augustan principate, and evaluate the sources for Augustus' settlement.”
Between roughly 133 and 27 BCE the Roman Republic collapsed under the strain of ambitious commanders, civil war and private armies. After defeating Mark Antony at Actium (31 BCE), Octavian, renamed Augustus in 27 BCE, built a monarchy in all but name. He held overwhelming power through control of the army, the provinces and key magistracies, while claiming merely to have restored the Republic. Evaluating his settlement means reading his self-presentation against more critical sources.
Jump to a section
What this dot point is asking
You must explain how political power and authority were exercised in Rome, trace the change from Republic to principate, and assess the nature of Augustus' rule, including how the sources shape our view of it.
The crisis of the Republic
The Republic distributed power among the Senate, annually elected magistrates and the popular assemblies, with authority resting on a mix of formal office (potestas), military command (imperium) and informal prestige (auctoritas). From the Gracchi (133 to 121 BCE) onward, this balance broke down. Marius' army reforms tied soldiers to their generals through promises of land; Sulla marched on Rome and became dictator (82 BCE); and the so-called First Triumvirate of Pompey, Crassus and Caesar (60 BCE) showed that real power now lay with warlords commanding loyal legions.
Julius Caesar crossed the Rubicon in 49 BCE, won the civil war, and was made dictator perpetuo before his assassination on the Ides of March 44 BCE. The conspirators hoped to save the Republic but triggered fresh civil war.
Octavian's victory
Caesar's heir Octavian formed the Second Triumvirate with Antony and Lepidus (43 BCE), defeated the assassins at Philippi (42 BCE), and then turned on Antony. The propaganda war cast Antony as a slave to the foreign queen Cleopatra. Octavian's victory at the naval battle of Actium (31 BCE) left him the sole master of the Roman world.
Augustus himself wrote that he exceeded all others in auctoritas (influence and prestige) while holding no more formal power than his colleagues in each office. This careful language is the key to his system: real dominance presented as merely first among equals.
The Augustan settlement
In 27 BCE Octavian theatrically "handed back" his powers to the Senate and people. In return he received the name Augustus and a vast provincial command covering the provinces where most legions were stationed, giving him control of the army while appearing to restore Republican government. He took the title princeps (first citizen), avoiding the hated word "king."
A further adjustment in 23 BCE strengthened his position: he gave up the continuous consulship but received tribunician power (tribunicia potestas) for life, which let him propose and veto legislation and protect citizens, plus a superior proconsular command (imperium maius). He thus controlled army, finance and law-making while the old offices continued in form. The system depended on his personal authority and the loyalty of the legions, not on a new constitution.
Evaluating the sources
Our central source is Augustus' own "Res Gestae Divi Augusti," the record of his achievements inscribed on his mausoleum and copied across the empire (the fullest copy survives from Ankara, the Monumentum Ancyranum). It is masterful self-presentation: it lists his offices, benefactions and conquests while quietly omitting the proscriptions and civil-war bloodshed that brought him to power. As a source it is indispensable for what Augustus wanted remembered, and revealing for what he chose to suppress.
Later historians complicate the picture. Tacitus, writing under the empire (early second century CE), opens his "Annals" with a sharply cynical account of how Augustus seduced the army with pay, the people with grain and everyone with the sweetness of peace, then drew all power to himself. Suetonius' biography and Cassius Dio's history add detail and anecdote but were written long after the events. Coins, statues such as the Augustus of Prima Porta, and the Ara Pacis (the Altar of Peace, dedicated 9 BCE) show how imagery promoted peace, piety and renewal as state ideology.
Why this matters for your study
Augustus is the model SACE case study in political power and authority: a transformation of the state achieved by force yet legitimised through language, religion and art. Strong responses distinguish the appearance of restored Republic from the reality of monarchy, and weigh the bias of each source.
Do not say Augustus "abolished the Republic" or "made himself king" outright. His genius was the opposite: he kept Republican forms and titles while concentrating real power through army command, tribunician power and auctoritas. Missing this disguise misses the whole point of the Augustan settlement.
A SACE essay rewards a weighed argument distinguishing appearance from reality.
Step 1: Define the terms
Distinguish "restored Republic" (shared, elected power) from "monarchy" (one-man rule), and set criteria of army, law and office.
Step 2: Argue for restoration
Show the 27 BCE handing-back, the continuation of magistracies and the title princeps.
Step 3: Argue for monarchy
Show control of the army through the provincial command, tribunician power, imperium maius and auctoritas.
Step 4: Weigh the evidence
Decide whether the Republican forms or the concentration of power is more decisive, evaluating the Res Gestae against Tacitus.
Step 5: Reach a judgement
Conclude that the settlement was monarchy disguised as restoration, supported by the source analysis.
Assessment-style questions
Questions on this dot point, each with a worked answer, written by ExamExplained. Ancient History has no written exam, so use them to check your understanding before your assessment tasks.
Practice15 marksSource A is an extract from the Res Gestae in which Augustus claims he held no more power than his colleagues but exceeded all in auctoritas. With reference to its origin, purpose and content, analyse the usefulness of this source for a historian investigating the nature of Augustus' rule.Show worked answer →
A SACE source-analysis response wants origin, purpose and content tied to a judgement about usefulness, not a paraphrase of the passage.
Origin and purpose. Identify it as Augustus' own monumental self-account, written to legitimise his rule as a restoration of the Republic. Its purpose makes it carefully worded and selective.
Usefulness. Argue it is highly useful as evidence of how Augustus disguised monarchy as first-among-equals, but unreliable as a balanced account, since it omits the proscriptions and the reality of army control.
Make the analytical move that the careful language reveals the strategy of the principate, and cross-check against Tacitus and the material evidence of imagery.
Markers reward the origin-purpose-content link and a judgement on usefulness for the inquiry.
Practice20 marksTo what extent did Augustus restore the Republic rather than establish a monarchy?Show worked answer →
A 20 mark extended response needs a thesis weighing the appearance of restoration against the reality of one-man rule.
Thesis. Argue that Augustus preserved Republican forms while concentrating real power, so he established a monarchy disguised as a restored Republic.
For restoration. Show the 27 BCE settlement, the continuation of offices, and the title princeps.
For monarchy. Show his control of the army through the provincial command, tribunician power and imperium maius, and his auctoritas.
Judgement. Conclude that the restoration was a facade, evaluating the bias of the Res Gestae against Tacitus and material evidence.
Markers reward a structured argument and evaluation of sources.
Practise this
Sources & how we know this
- Stage 2 Ancient Studies subject outline (2025 onwards) — SACE Board
- Stage 2 Ancient Studies: external assessment — SACE Board