B: the Union attack at fort Sumter
Answer:
ok
Explanation:
I know it's late but do you still need the answer
This is an example of "a prejudice".
Racism and prejudice has been available in relatively every human advancement and society all through history. Prejudice is a progressing power that contrarily impacts the lives of Americans consistently. The supremacist mentality in America comes from the seasons of servitude, where blacks were believed to be mediocre compared to whites.