Answer: It increases the potential of societal rebellion.
Explanation: Eventually, if the people are being treated poorly for long enough, there is a higher risk of some form of rebellion forming within the country.
They were segregated and forbidden from doing numerous things because of the jim crow laws. These laws established where they would be able to live and where not, where they would be able to go to school and where not, and in what manner would be they allowed to vote, which usually resulted with them not voting. They was a systematic racism scheme in the south to enable this.
They were found in the south because that's where slavery had been a dominating force and in response to the reconstruction era, the white racist governments from the south imposed numerous laws. Although they couldn't enslave african-american people, they would remove them from all spheres of society completely.
Jim Crow was a character made by white people which showed an african-american person who was depicted as a racial stereotype caricature which spread fast and reinforced the idea that black people were either stupid or are tricksters or are malicious or similar things. The set of laws that reinforced these ideas then was called Jim Crow Laws because of the caricature.
They all settled near rivers, all had religions, and languages.
I think the diaspora that took the jews to what is modern-day turkey is : Roman
They somehow had a relation with byzantine empire that had a relation with the ottoman
hope this helps