I think the answer is A too
Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction.
So basically there shall be no slavery within the US, and if there is it will be prosecuted.
Answer:
North Korean troops captured most of the peninsula.
Answer:
B.) People should use ethics to make good decisions.
Answer:
It was where scholars from all over came to study.