Because some people are just mean, but just think, white people enslaved white people before africans were enslaved at all. In america africans are just known that way but we need to improve.
At this time period, people were looking for jobs in factories so they flocked to the cities where factories were becoming popular.
The correct answer is C.
The Ferlite Crescent is a region named due to its crescent shape which was inhabited by ancient civilizations such as the Sumer or the Ancient Egyptians. In the settlements of this region, agriculture begun due to the excellent conditions for growing crops generated by the inundations of the rivers Nile, Eufrates and Tigris, that enabled very profitable agricultural activities and animal husbandry.
This area is also important due to the emergence of crucial inventions and technological developments such as the wheel, glass, writing, and also, related to agriculture, the first irrigation systems.