The success of the Lewis and Clarke expedition aided greatly in sustaining our title to the Oregon country. The joint leaders of it became celebrated by their arduous achievement, and were rewarded accordingly. Lewis was appointed governor of Louisiana territory in 1807, and held the position until his death in 1809; while Clarke was for a long period governor of the territory of Missouri, serving in that capacity when the State was admitted to the Union. But while the Lewis and Clarke expedition largely increased our knowledge of the country, and added to the strength of our title, it did not definitely settle any disputed question. With Spain we had constant trouble in regard to the boundaries of Louisiana, both on the west in the direction of Texas, and on the east along the confines of Florida. She had always been dissatisfied with Bonaparte's transfer of Louisiana to the United States. If that result could have been foreseen, the treaty of San Ildefonso would never have been made. The government of the United States believed that Louisiana, as held by France, had bordered on the Rio Grande, and that, by the treaty with Bonaparte, we were entitled to territory in the direction of Florida as far as the Perdido. In the vexatious war with the Seminoles, General Jackson did not hesitate to march across the line, capture Pensacola, and seize the Barancas. The comments, official and personal, which were made on that rash exploit, led to controversies and estrangements which affected political parties for many years after. Jackson's hostility to John Quincy Adams, his exasperating quarrel with Clay, his implacable hatred for Calhoun, all had their origin in events connected with the Florida campaign of 1818.