The Prosperity of the British Economy Following the Fall of the Roman Empire

When the Roman Empire withdrew from Britain, it didn’t lead to chaos or total economic failure. Archaeological evidence reveals that metalworking pollution indicates the metal industry in northern England not only continued but thrived in the ensuing centuries.

“The prevalent theory was that the absence of state transportation systems and military equipment would cause the local economy to collapse,” explains Christopher LaBlack from the University of Nottingham, UK. However, archaeology tells a different story. “We see a significant increase in metal-contaminated products.”

La Brack is part of a research team that excavated Roman artifacts from Aldovallo, North Yorkshire, England. Under Roman rule, this area was known as Isurium Brigantum, where metals such as iron and lead were mined and processed.

The team found that aerosol contamination from metalworking practices was preserved in sediment layers accumulated in ancient riverbeds at archaeological sites. By analyzing these layers, they could chart the changes in pollution levels from 345 to 1779 AD.

“This extensive chronology allows for quite a comprehensive view of fluctuations,” notes Jane Carshaw from Oxford University, who did not participate in the research but has studied early medieval metal mining.

In the late 300s and early 400s, with the Roman Empire’s retreat from Britain, it was believed that all forms of government support would vanish, along with tax collection and new currency, leading to the withdrawal of military forces from the region,” says La Brack. Over the following centuries, few written accounts exist, and certain industries, particularly those producing wheel-thrown pottery, experienced a steep decline. This has often been interpreted as indicative of “the collapse of British society in the fifth century,” according to Loveluck.

However, the riverbed records paint a different picture. Lead pollution was minimal during the Roman era, slightly dipping in the late 300s to early 400s, but then increasing steadily until the mid-500s. Correspondingly, pollution from ironworking also saw a rise in the early 500s.

This points to the sustained large-scale production of essential goods, supporting Loveluck’s claims.

The uptick in metal production may have been spurred by internal conflicts, suggests Kershaw. “This was a time of consolidation among various Anglo-Saxon kingdoms,” she explains. “There was considerable fighting between these different factions,” with many fallen warriors buried with swords and knives.

Production levels of metal then sharply dropped in the mid-500s and remained low for several decades. The research team posits this could be linked to the Justinian Plague, which swept through the Mediterranean region between 541 and 549 AD. Ancient DNA evidence from cemeteries in East England supports the arrival of the plague in England. However, the extent and severity of its spread remain uncertain. “There isn’t a significant mass grave filled with plague victims, as we observe in later plague episodes,” explains Kershaw.

The resilience of metal production in Aldborough amidst the Roman retreat aligns with other findings that suggest economic and political continuity. “For instance, Droitwich in Worcestershire has maintained a continuous sequence of salt production from Roman times through to the present day,” notes La Brack.

The aftermath of Rome’s withdrawal has often been labeled the Dark Ages due to the scarcity of written documentation and assumptions of a decline in intellectual life. However, historians argue that this characterization is overly simplistic.

While certain practices, such as the manufacturing of wheel-turned pottery and stone structures, faded, this era also saw the production of copper metalworks, which were widely utilized. “If this period was truly so dire, why are there exquisite brooches and vibrant beaded necklaces?” inquires Kershaw.