Ancient Rome · 376–476 CE

Why Did the Western Roman Empire Fall?

In short

  • Goths admitted in 376 defeated Rome at Adrianople in 378; Rome itself was sacked in 410 and 455.
  • The loss of North Africa's taxes in 439 left the western government unable to pay for its own defence.
  • In 476 Odoacer deposed the last western emperor; the eastern empire lasted until 1453.
Painting of a classical city being sacked, with burning buildings, a broken bridge and fighting crowds beneath a large broken statue.
Thomas Cole, The Course of Empire: Destruction, 1836, New-York Historical Society. It shows an imagined city, not Rome: Cole was warning his own young republic. Thomas Cole, 1836 · Public domain · Wikimedia Commons

Last time: Augustus built a monarchy behind republican forms. It survived crises and reinventions for four centuries; by the 4th century the empire also had a second capital, Constantinople.

In 476 CE a general named Odoacer deposed the boy emperor of the West, Romulus Augustulus, and pensioned him off to a villa near Naples. Instead of choosing a successor, he sent the imperial regalia to Constantinople. Few people at the time seem to have thought the world had ended.

Refugees on the Danube

In 376, tens of thousands of Goths fleeing the Huns gathered on the Danube and asked to be let into the empire. Emperor Valens agreed, hoping for recruits. Roman officials then exploited the starving refugees, and the Goths rebelled.

On 9 August 378, near Adrianople in Thrace, they destroyed a Roman army and killed Valens himself. The historian Ammianus Marcellinus, a former officer who lived through these years, wrote that only Cannae compared. Unable to defeat or expel the Goths, Rome settled them inside the empire in 382 under their own leaders.

Painted riverscape of families with boats, rafts and wagons crossing a wide river while soldiers watch from the bank.
Illustration: Goths cross the Danube into the Roman Empire in 376 CE under the watch of Roman soldiers. Illustration (AI-generated)

The city that took the world

After Theodosius I died in 395, the empire was split between his two sons, and no one ever ruled all of it again. Western emperors now lived in Milan and then Ravenna; Rome was a symbol, not a capital. At the end of 406, Vandals, Alans and Sueves crossed the Rhine into Gaul.

On 24 August 410, the Gothic leader Alaric, frustrated in his demands for land and a Roman command, sacked Rome for three days. It was the first time in about 800 years that a foreign enemy had taken the city. In Bethlehem, Jerome wrote that “the city which had taken the whole world was itself taken”.

Painting of muscular warriors hauling down a large marble statue with ropes.
Joseph-Noël Sylvestre, The Sack of Rome by the Barbarians in 410, 1890, Musée Paul Valéry, Sète: a 19th-century imagining of Alaric's Goths in the city. Maître François, c. 1475 · Public domain · Wikimedia Commons

Losing the money

The losses that mattered most were financial. In 439 the Vandals captured Carthage, the capital of Roman Africa and the West's richest source of taxes and grain. With less money, the government could pay fewer soldiers, so it leaned on barbarian allies, who demanded land and revenue in return, which shrank its income further. Historians such as Peter Heather put this spiral at the heart of the collapse.

Attila's Huns invaded Gaul in 451 and Italy in 452. The Vandals sacked Rome in 455. In the 21 years from 455 to 476, the West had nine emperors, several of them puppets of powerful generals.

Map of Europe and the Mediterranean showing the eastern Roman Empire and several barbarian kingdoms in the West.
Map of the Roman world around 476 CE: the eastern empire intact, the West broken into barbarian kingdoms, with Roman Africa now held by the Vandals. Guriezous · CC BY-SA 4.0 · Wikimedia Commons

476: the ending nobody announced

In 475 the general Orestes, who had once served as Attila's secretary, put his young son Romulus on the throne. A year later Odoacer, commander of the barbarian troops in Italy, killed Orestes and deposed the boy. Odoacer ruled Italy as a king, a title Romans had rejected almost a thousand years earlier, while acknowledging the emperor in Constantinople.

Even the date is debatable. Julius Nepos, the emperor Orestes had overthrown, was alive in Dalmatia and recognised in the East until his murder in 480. It was a chronicler in Constantinople, writing decades later, who fixed 476 as the year the Western empire “perished”.

Small gold coin showing a helmeted emperor in armour holding a spear.
Gold solidus of Romulus Augustulus, 475–476 CE. The coin still shows the armoured emperor of Roman tradition, while real power lay with his generals. American Numismatic Society · CC0 · Wikimedia Commons

Fall or transformation?

In the East, the empire lasted almost another thousand years, until the Ottomans took Constantinople in 1453. Its people called themselves Romans; “Byzantine” is a label Western scholars popularised much later.

Whether the West “fell” is still argued. Peter Brown and others stress continuity: Latin, Roman law and the Church carried on under new kings. Bryan Ward-Perkins answers with archaeology: in the fifth and sixth centuries, coins, pottery and roof tiles became rarer and cruder across the West, and even cattle got smaller. The historian Alexander Demandt once counted 210 explanations for the fall. Most historians now combine a few: pressure on the frontiers, civil wars, and a state that ran out of money.

Massive stone and brick city walls with square towers running across green ground.
The Theodosian Walls of Constantinople (Istanbul), built in the early 5th century CE. These land walls were not breached until the Ottoman conquest of 1453. Carole Raddato, 2017 · CC BY-SA 2.0 · Wikimedia Commons

In their own words

“The western empire of the Roman people, which Octavian Augustus, the first of the emperors, began to rule… perished with this Augustulus… and from then on Gothic kings held Rome.”

Marcellinus Comes, Chronicle, entry for the year 476, c. 518–534 CE

Marcellinus wrote in Constantinople more than forty years after the event and is one of the earliest surviving writers to treat 476 as the end of the Western empire. He calls Odoacer and his successors Gothic kings, though other sources link Odoacer to different peoples, such as the Sciri. Translation after Brian Croke (1995).

Why it happened

  • The arrival of the Huns pushed Gothic and other peoples across the frontiers.
  • Defeat at Adrianople and repeated civil wars weakened Roman armies.
  • The loss of Africa in 439 cut the western government's tax income.
  • Short reigns and powerful generals made the western throne unstable.

What happened next

  • Barbarian kingdoms (Visigoths, Franks, Ostrogoths, Vandals) replaced Roman government in the West.
  • The eastern Roman Empire continued for nearly a thousand years, until 1453.
  • In 800 the Frankish king Charlemagne was crowned emperor in Rome, reviving the western title. Read the story →

Why it still matters

In Turkey today, Istanbul's Greek Orthodox Christians are still called Rum, “Romans”, and the Turkish name for their patriarchate is the Fener Rum Patrikhanesi. It is a living trace of a Roman Empire that, in the East, did not end in 476, and a reminder that “the fall of Rome” depends on where you stand.

Key people

Valens
Eastern emperor who admitted the Goths in 376 and died at Adrianople in 378
Alaric
Gothic leader who sacked Rome in 410
Gaiseric
Vandal king who took Carthage in 439 and sacked Rome in 455
Romulus Augustulus
The last emperor in the West, deposed as a boy in 476
Odoacer
Commander who deposed Romulus and ruled Italy as king from 476 to 493

Key terms

Foederati
“Allies”: barbarian groups settled within or beside the empire who fought for Rome under their own leaders.
Late Antiquity
Term for roughly 250–750 CE that stresses transformation and continuity rather than sudden collapse.
Byzantine Empire
Modern name for the eastern Roman Empire, ruled from Constantinople until 1453; its people called themselves Romans.
Sack
The plundering of a captured city; Rome was sacked by the Goths in 410 and by the Vandals in 455.

Test yourself

Who deposed Romulus Augustulus in 476?

  1. Alaric
  2. Odoacer
  3. Attila
  4. Gaiseric
Show the answer

Odoacer. Odoacer, commander of the barbarian troops in Italy, deposed the boy and ruled as king. Alaric sacked Rome in 410, Gaiseric's Vandals sacked it in 455, and Attila died in 453.

The full lesson in the app ends with 5 questions like this one.

Connected stories

Frequently asked questions

What caused the fall of the Western Roman Empire?

The arrival of the Huns pushed Gothic and other peoples across the frontiers. Defeat at Adrianople and repeated civil wars weakened Roman armies. The loss of Africa in 439 cut the western government's tax income. Short reigns and powerful generals made the western throne unstable.

What happened after the Western Roman Empire fell?

Barbarian kingdoms (Visigoths, Franks, Ostrogoths, Vandals) replaced Roman government in the West. The eastern Roman Empire continued for nearly a thousand years, until 1453. In 800 the Frankish king Charlemagne was crowned emperor in Rome, reviving the western title.

Why was the Vandal capture of Carthage in 439 so damaging?

It cut off the West's richest source of taxes and grain. Roman Africa paid much of the western government's bills and fed Rome. Without that income the West could not pay enough soldiers, which made it more dependent on barbarian allies.

What is the main primary source for “The Fall of the Western Roman Empire”?

Marcellinus Comes, Chronicle, entry for the year 476 (c. 518–534 CE). Marcellinus wrote in Constantinople more than forty years after the event and is one of the earliest surviving writers to treat 476 as the end of the Western empire. He calls Odoacer and his successors Gothic kings, though other sources link Odoacer to different peoples, such as the Sciri. Translation after Brian Croke (1995).

Sources

  • Ammianus Marcellinus, Res Gestae (History), Book 31
  • Marcellinus Comes, The Chronicle of Marcellinus, translated with commentary by Brian Croke (1995)
  • Peter Heather, The Fall of the Roman Empire: A New History (2005)
  • Bryan Ward-Perkins, The Fall of Rome and the End of Civilization (2005)

Images are credited under each picture. Paintings and photographs come from public collections via Wikimedia Commons; scenes with no surviving image are marked as illustrations.