Mediterranean Sea is the answer.
Slavery was a key issue in the admission of states into the union. states had to be admitted in pairs, free states and slave states, in order to maintain balance in the union. It was agreed that offsetting the balance would escalate the tension regarding slaverly and tear apart the union.
The answer is C. Everyone, even the king, has to obey the law.
The Magna Carta (1215) was the first law that dictated that even the king was a subject to law.
