Can somebody list and describe two engineering achievements of the Romans in the middle ages. Thank you

Aqueduct and Colosseum

Explanation:

The aqueduct helped move water around Rome and the Colosseum is a very important building

wood carving remains today the primary sculptural art form of the sub saharan continent. african art history shows the earliest wooden sculptures from the 17th c are attributed to the kuba, central zaire but the earliest surviving sub-saharan sculpture is a zoomorphic head found in 1928 in central angola.

i hope this .

this isn't a question and if you're going to list things be kind and use commas.