I'm pretty sure that the answer to this question is letter A.
No.
there really isn't an excuse to why anybody isn't treated or seen as an equal. Everybody is and should be treated an equal. In back then, if you're going to create equality and speak equality you should probably practice what you preach.
I think it's George Vancouver?
During The Cold War American and The Soviet union were caught in an arms race
Racial segregation during the post-Civil War period was ruled constitutional by the Supreme Court in "Plessy vs. Ferguson", which ruled that "separate but equal" facilities in the South for blacks were constitutional.