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Concept Breakdowns

Roman Republic to Empire Transition Key Events

These flashcards cover the pivotal political crises, figures, and moments that ended the Roman Republic and established the Principate. Essential for AP World History, Western Civ, and history students studying how Rome's republican institutions collapsed under civil war, populism, and personal ambition between 133–27 BCE.

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What ended the Roman Republic?

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Collapse of the Republic: A century of civil wars (133–27 BCE) ending when Octavian defeated Antony at Actium (31 BCE) and became Augustus, Rome's first emperor.

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Gracchi Brothers reforms

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Tiberius & Gaius Gracchus: Tribunes who pushed land redistribution (133–121 BCE).

  • Challenged senatorial authority
  • Assassinated by conservatives
  • Opened era of populist politics
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What was the First Triumvirate?

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First Triumvirate (60 BCE): Informal power-sharing alliance of Caesar, Pompey, and Crassus to dominate Roman politics, bypassing the Senate.

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Caesar crosses the Rubicon

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Augustus and the Principate

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Frequently Asked Questions

What is the difference between the Roman Republic and the Roman Empire?

The Republic (509–27 BCE) was governed by elected magistrates (consuls, praetors) and the Senate, with power distributed among the patrician class. The Empire concentrated power in one ruler (the emperor), though early emperors like Augustus maintained the facade of republican institutions.

  • Republic: shared power, Senate supreme
  • Empire: emperor holds ultimate authority

Why did the Roman Republic fall?

The Republic fell due to a combination of factors: economic inequality from conquest, the rise of professional armies loyal to generals rather than the state, a series of civil wars (Marius vs Sulla, Caesar vs Pompey), and the breakdown of political norms that allowed Augustus to seize permanent power.

How many years did the Roman Republic last?

The Roman Republic lasted approximately 482 years, from its founding in 509 BCE (expulsion of the last king) to 27 BCE when Augustus became the first emperor.