A. The attempted extermination of European Jews and others by the Nazis.
Answer:
B- i am not sure but i think its B-
Explanation:
Currently studying this right now and I am fairly confident it is A.
I'm African American so I already should know this their where different kind of slaves back then yes they where all African American but most slaves tried to rebell, run, or just didn't do anything because the got whipped but some slaves even killed their owners.