Article 9th: The United States of America engage to put an end immediately after the Ratification of the present Treaty to hostilities with all the Tribes or Nations of Indians with whom they may be at war at the time of such Ratification, and forthwith to restore to such Tribes or Nations respectively all the possessions, rights, and privileges which they may have enjoyed or been entitled to in one thousand eight hundred and eleven previous to such hostilities. Provided always that such Tribes or Nations shall agree to desist from all hostilities against the United States of America, their Citizens, and Subjects upon the Ratification of the present Treaty being notified to such Tribes or Nations, and shall so desist accordingly. And His Britannic Majesty engages on his part to put an end immediately after the Ratification of the present Treaty to hostilities with all the Tribes or Nations of Indians with whom He may be at war at the time of such Ratification, and forthwith to restore to such Tribes or Nations respectively all the possessions, rights, and privileges, which they may have enjoyed or been entitled to in one thousand eight hundred and eleven previous to such hostilities. Provided always that such Tribes or Nations shall agree to desist from all hostilities against His Britannic Majesty and His Subjects upon the Ratification of the present Treaty being notified to such Tribes or Nations, and shall so desist accordingly.

–from the Treaty of Ghent, 1814

Article 10th:

Whereas the Traffic in Slaves is irreconcilable with the principles of humanity and Justice, and whereas both His Majesty and the United States are desirous of continuing their efforts to promote its entire abolition, it is hereby agreed that both the contracting parties shall use their best endeavours to accomplish so desirable an object.

-from the Treaty of Ghent, 1814

Which central idea do these two passages have in common?

They both tell why slavery is an unjust practice that should end.
They both explain how the United States will work to stop something.
They both identify all the parties involved in the signing of the agreement.
They both describe how the war between the US and the tribes will be resolved.