I'm not 100% sure what the skill means, but I did hear about a "piaget's skill of centration"
Answer:
Egypt lived along the Nile River in Egypt. Mesopotamia was settled between the Tigris and Euphrates rivers on the Fertile Crescent. The Egyptians believed in polytheism. The Mesopotamians had improved with irrigation and farming.
Have a nice day <3
I believe the answer is: Jones vs. Mayer
The case Jones vs. Mayer revolved around the the situation when the sellers of the house put a higher requirement for potential buyers from members of racial minorities. The case ended up in the creation of 42 U.S.C. § 1982 which banned all form of discrimination in protperty selling.