Why did so much technology that was common in the Roman Empire did not make it into the medieval age?

Question

Examples like aquaducts, sewage, advanced architecture, etcetera

In: 121

Answer 1

Many of the peoples of the Roman Empire were illiterate (certainly this was the case for a lot of Anglo-Saxon Britain). Thus when the Romans left, a lot of what happened was lost (hence being known as the Dark Ages). Britain is possibly also something of an outlier as it was so far from Rome that a lot of the advancements wouldn’t have made it there.