Answer:
Social Darwinists believe in “survival of the fittest”—the idea that certain people become powerful in society because they are innately better. Social Darwinism has been used to justify imperialism, racism, eugenics and social inequality at various times over the past century and a half.
My answer would be fertile soil.
Hello~
Mesopotamia was not a person, but an ancient civilization. It was between rivers Tigris and Euphrates.
I hope this helps! There are many places you can find more information.