Debris seems like it fits well <span />
Answer:
John Brown's personal war against slavery had set this process in motion.
I'd most likely say A, though they did discriminate since they were fighting this large-scale war, especially against the Japanese. But because this war was going on, they needed as much labor as possible. This was so they could have as much produced as possible, such as weapons and such.
I'm not sure if this is correct, so I'm sorry if it's wrong, but it'd be the one I choose.
Have a good day!
Discretionary spending program refers to a program that can have its spending adjusted.
So in your case the answer is A. National Defense