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

Resources to make complex technologies or items may come from widely separated areas.
The knowledge to maintain or create advanced items may require what we’d consider extensive secondary education.
Building monumental architecture also requires many years of stability in an area with an abundance of resources even if a culture has the know-how.