Answer:
Archimedean screw
Explanation:
The Archimedean screw is also known as the water screw, screw pump, and Archimedes' screw. The screw is also used to pump grains, sewage, solid or liquid substances from low places to elevated places. This ancient Greek technology is still used today. Thus the correct answer is option B.
The answer is standardized parts
True I think, black people were not considered fully people
Aaaaaaaaaaaaaaaaaaaaaaaas
