They wanted to avoid being drawn into conflicts between the global superpowers.
I think the answer is d. The slave owners could keep the slaves working in the field by turning them in because they were jobless. It was illegal back them to be jobless. The thirteenth amendment said you could not be a slave unless you were a prisoner.
If you need more help look up thirteenth amendment
First amendment freedom of speech and religion, 4th the right to be secure in their persons houses papers and documents, and 19th gave women the right to vote
Because there was so little known about the ocean floor at the time
