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

A lot of those things require large scale planning and resources. Western Europe kind of imploded into a bunch of relatively smaller nations, which were unable to support such projects. They were still built in the Eastern Roman Empire in the middle ages, so they weren’t really lost.