Rome Did Not Fall in a Day

In 476 CE a Germanic commander named Odoacer deposed a teenage emperor called Romulus Augustulus, declined to appoint a successor, and sent the imperial regalia to Constantinople with a note observing that one emperor was sufficient. This is the fall of the Roman Empire.

Here is what happened next in Italy. Taxes were collected. The Senate continued to meet. Consuls were appointed and their names were recorded. Latin was written, aqueducts were maintained, and law was administered under substantially the same code. Odoacer ruled as a subordinate of the eastern emperor, which is roughly what the last several western emperors had been in practice. No contemporary source records that an empire had ended, because from inside it was not obvious that one had.

The date was chosen in the eighteenth century by historians who required a hinge, and it has been doing service ever since.

What the evidence actually shows across the fifth century is a gradient. Coin finds thin out. Pottery gets coarser and its distribution shrinks, so a household that had been buying wares made four hundred miles away is now buying from forty. Long-distance trade contracts. Towns shed population. Monumental building stops, then ordinary building in stone stops. Each of these trends runs over decades, starts at different times in different provinces, and in some regions reverses for a while. A person alive in 450 would have noticed that things were shabbier than in their parents' day. They would not have noticed an ending.

The word 'invasion' does comparable damage. Much of the movement across the frontier was migration into an empire that had spent centuries recruiting, settling and federating exactly these groups, frequently by treaty and often as its own army. Many of the leaders held Roman titles and wanted a recognised place inside the system rather than its destruction; Odoacer's request was for recognition, not independence. There was real violence, including two sackings of Rome. But hordes at the gates describes the fifth century about as well as invasion describes it, which is to say badly enough to mislead.

And then there is the awkwardness that will not go away. The eastern half of the empire continued for another nine hundred and seventy-seven years. Its citizens called themselves Romaioi (Romans) and their state the Roman Empire, because it was: continuous law, continuous administration, continuous succession from Augustus. We call it Byzantine, a term coined by a German scholar in 1557, a century after the state's death. The name does quiet ideological work. It allows a narrative in which Rome falls in 476 to survive the fact that a Roman emperor was still ruling in 1453.

So why has decline and fall proved impossible to dislodge? Because it is a story with a shape (rise, corruption, collapse) and the evidence is a slow regional gradient with no shape at all. Gibbon published in 1776 and his narrative has outlived nearly every specific claim in it. Over two hundred separate causes have been proposed for the fall, from lead pipes to Christianity to climate, which is a good sign that the phrase is doing rhetorical rather than analytical work.

That last point is the portable one. When somebody says a modern state is in its late Roman phase, the useful question is which mechanism they mean: fiscal overreach, elite defection, the privatisation of the military, the hollowing of a tax base. Each of those can be examined on its own terms. None of them needs the costume.