The purpose of this provision, as it existed at the time in the minds of the framers of the Constitution, must be gathered from the whole course of their proceedings with respect to it, and from the surrounding facts, which exhibit what was then, and what was afterwards likely to become, the situation of the United States in reference to the acquisition of territory and the admission of new States. There were, then, at the time when this provision was made, four classes of cases in the contemplation of the Convention. The first consisted of the Northwestern Territory, in which the title to the soil and the political jurisdiction were already vested in the United States. The second embraced the case of Vermont, which was then exercising an independent jurisdiction adversely to the State of New York, and the case of Kentucky, then a district under the jurisdiction of Virginia; in both of which the United States neither claimed nor sought to acquire either the title to the vacant lands or the rights of political sovereignty, but which would both require to be received as new and separate States, the former without the consent of New York, the latter with the consent of Virginia. The third class comprehended the cessions which the United States in Congress were then endeavoring to obtain from the States of North Carolina, South Carolina, and Georgia, and in which were afterwards established the States of Tennessee, Mississippi, and Alabama.[293] These cessions, as it then appeared, might or might not all be made. If made, the title of the United States to the unoccupied lands would be complete, resting both upon the cessions and upon the treaty of peace with England; and the political jurisdiction over the existing settlements, as well as over the whole territory, would be transferred with the cessions, subject to any conditions which the ceding States might annex to their grants. If the cessions should not be made, the claims of the United States to the unoccupied lands would stand upon the treaty of peace, and would require to be saved by some clause in the Constitution which should signify that they were not surrendered; while the claims of the respective States would require to be protected in like manner.