The correct answer is the Federal Reserve system: answer B.
It was established with an act of 1913 and it replaced a previous system of national banks which were the banking institutions of the US from 1863.
The reason for a change was a financial panic of 1907
Ritual. ...
Explanations. ...
Tradition. ...
Grace. ...
Mystery.
I think the answer is C.) greeks
The words "discrimination", "segregation" and "integration" refer to the group interaction between the majority and minority - integration suggests a positive interaction and the other two a negative one. But they don't describe a group, so they can't be a correct answer.
The correct answer is "ethnic group" - it's more than race since culture is also shared!
