Answer:
There are many disadvantages of exclusion in societies. One disadvantage is that social exclusion creates parallel sub-societies and sub-cultures within a society, that threaten the social order of a particular area.
Another disadvantage, related with the first, is that exclusion leads to little dialogue among different social groups. This can greatly increased social conflict, political extremism and radicalization, and in extreme cases, as history has shown many times, could lead to civil war.
Sumerians were known for two inventions:
irrigation, that is bringing water to crops that would otherwise not have access to it
and writing: cuneiform, one of two first writing systems on earth (the other being hieroglyphs).
Dang girl that looks hard , im sorry
Rhode Island was the first to issue a call for black troops.
When you learn about the source of racist ideas, it helps you learn who you are. Personally, I have nothing against those with colored skin, or people from other areas. But believe it or not, there are actually souls out there that do. I think that people who have nothing against them are right. They just have different skin color, religion beliefs, etc.
Those innocent people did nothing to us, so why do we treat them in such a way..? There is nothing more hurtful than being judged by your skin color. So treat others the way you want to be treated and be kind to them. Respect everyone even if they did something to you. I think that this way, people have a different viewing of you. :) Thanks
Treat others with respect and make this world better :P