It was now manifest to Spain, however, that she could not control Florida, and that her possession of the province was, and could be, only nominal. She now, therefore, agreed to cede it to the United States. The treaty bears date of February 22nd, 1819. Its important provisions are contained in the second and third articles. By these articles Spain ceded the Floridas, with the adjacent islands dependent thereon, to the United States; and agreed with the United States that the boundary between the two powers in North America should be the west bank of the Sabine River from its mouth to the thirty-second parallel of north latitude, thence the line of longitude to the Red River, thence up the course of the Red River to the one-hundredth parallel of longitude from London, or the twenty-third from Washington, thence the line of longitude to the Arkansas River, thence the south bank of the Arkansas to its source, thence the line of longitude to the forty-second parallel of north latitude, and thence this line of latitude to the South Sea. This settlement of boundary included that of all other claims, of whatever character, of the Government, citizens, or subjects of either power against the Government, citizens, or subjects of the other. All such were mutually renounced. [Sidenote: Jackson's popularity in consequence of the Seminole War.] The results of the Seminole War raised General Jackson to a still higher plane of popularity than he possessed as the hero of the War of 1812. It was evident that here was a character who would have to be reckoned with in future presidential contests. It is possible that Jackson's chief mentor, William B. Lewis, had {34} conceived, at this date, the idea of Jackson's candidacy for the highest place in the gift of the nation. And it is highly probable that the fears of all the existing aspirants for the presidency were excited by the appearance of this new and popular rival for public favor. It is difficult to explain upon any other theory the attempt made in Congress, during the session of 1818-19, to suppress Jackson by a vote of censure. [Sidenote: The attempt in Congress to censure Jackson.] This procedure certainly had no connection whatsoever with the question of slavery extension through the acquisition of Florida. When we find Tallmadge, of New York, the self-same person who introduced, at the same session, the proposition for restricting slavery in Missouri, defending Jackson's course in every particular, while Cobb, of Georgia, attacked it, and when we consider that John Quincy Adams, the life-long opponent of slavery, sustained Jackson in the cabinet, while Calhoun moved to bring him to account for disobedience to orders, we are bound to conclude that we have here nothing whatsoever to do with the question of slavery. [Sidenote: The same attempt in the Cabinet.]