I think it's d but are you talking about the Great Depression
it us in areas between europe and asia
The Ku Klux Klan was created after Abraham Lincoln had claimed slavery was no longer legal. The KKK went around, killing black people and such. They also protested around the segregation process. They are still around to this day, but I don't believe that are killing anymore.
Yes, I believe that's true. They spread their believes and traditions with them.