Roman Empire Timeline: 1,200 Years of History
Rome's history spans over a millennium, from its legendary founding in 753 BC to the fall of the Western Empire in 476 AD. Here's the complete timeline.
Era 1: The Kingdom (753-509 BC)
| Date | Event |
|------|-------|
| 753 BC | Legendary founding of Rome by Romulus |
| 715 BC | Numa Pompilius, second king, establishes religious traditions |
| 616 BC | Etruscan kings begin ruling Rome |
| 509 BC | Overthrow of the last king, Tarquinius Superbus |
Key development: Rome transforms from a small settlement to a significant Italian city-state under seven kings.
Era 2: The Republic (509-27 BC)
| Date | Event |
|------|-------|
| 509 BC | Roman Republic established; first consuls elected |
| 494 BC | First secession of the plebeians; tribunes created |
| 390 BC | Gauls sack Rome |
| 264-241 BC | First Punic War against Carthage |
| 218-201 BC | Second Punic War; Hannibal invades Italy |
| 149-146 BC | Third Punic War; Carthage destroyed |
| 133-121 BC | Gracchi brothers' reforms and deaths |
| 88-82 BC | Sulla's civil war and dictatorship |
| 73-71 BC | Spartacus slave rebellion |
| 60 BC | First Triumvirate (Caesar, Pompey, Crassus) |
| 49-45 BC | Caesar's civil war |
| 44 BC | Assassination of Julius Caesar |
| 43 BC | Second Triumvirate (Octavian, Antony, Lepidus) |
| 31 BC | Battle of Actium; Octavian defeats Antony and Cleopatra |
Key developments: Rome conquers the Mediterranean, develops republican institutions, but internal conflicts lead to civil wars.
Era 3: The Principate/Early Empire (27 BC - 284 AD)
| Date | Event |
|------|-------|
| 27 BC | Octavian becomes Augustus; Empire begins |
| 14 AD | Death of Augustus; Tiberius becomes emperor |
| 37-41 AD | Reign of Caligula |
| 54-68 AD | Reign of Nero |
| 69 AD | Year of the Four Emperors |
| 79 AD | Eruption of Vesuvius destroys Pompeii |
| 98-117 AD | Trajan's reign; Empire at maximum extent |
| 117-138 AD | Hadrian's reign; defensive consolidation |
| 161-180 AD | Marcus Aurelius; last of the "Five Good Emperors" |
| 193 AD | Year of the Five Emperors |
| 212 AD | Caracalla grants citizenship to all free men |
| 235-284 AD | Crisis of the Third Century |
Key developments: Pax Romana brings prosperity; empire reaches maximum size under Trajan (117 AD); third-century crisis nearly destroys Rome.
Era 4: The Dominate/Late Empire (284-476 AD)
| Date | Event |
|------|-------|
| 284-305 AD | Diocletian's reign; Tetrarchy established |
| 306-337 AD | Constantine's reign |
| 313 AD | Edict of Milan; Christianity legalized |
| 330 AD | Constantinople founded as eastern capital |
| 380 AD | Theodosius makes Christianity official religion |
| 395 AD | Empire permanently divided into East and West |
| 410 AD | Visigoths sack Rome |
| 455 AD | Vandals sack Rome |
| 476 AD | Romulus Augustulus deposed; Western Empire ends |
Key developments: Christianity becomes dominant; empire splits; Western Empire falls to Germanic invasions.
Rome's Greatest Extent (117 AD)
- All of the Mediterranean coast
- Britain (up to Hadrian's Wall)
- Most of modern France, Spain, Portugal
- The Balkans and Greece
- Asia Minor (modern Turkey)
- The Levant and Egypt
- Mesopotamia (briefly)
Population: Approximately 55-70 million people
Key Turning Points
509 BC: Establishment of the Republic created the governmental model that lasted 500 years.
146 BC: Destruction of Carthage made Rome the unchallenged Mediterranean power.
27 BC: Augustus's principate transformed Rome from republic to empire.
284 AD: Diocletian's reforms stabilized the crisis but fundamentally changed Roman government.
476 AD: The fall of the Western Empire—though the Eastern Empire (Byzantium) continued until 1453 AD.