Answer:
Known as the Kansas-Nebraska Act, the controversial bill raised the possibility that slavery could be extended into territories where it had once been banned. ... Its passage intensified the bitter debate over slavery in the United States, which would later explode into the Civil War.
Explanation:
everything is here
C is severely limited by "elastic clause
They made these things to improve how they trade with others. ex. trains are made to export goods to another location
I dont know if that is good enough?
