Scarcely had the British troops been withdrawn from the Gulf of Mexico to fight more successfully at Waterloo, when Jackson was called to put an end to the Seminole war in Florida, which Spanish territory he occupied on the ground of self-defence. The Indians—Seminoles and Creeks—with many runaway negroes, had been pillaging the border of Georgia. Jackson drove them off, seized the Spanish fort on Appalachee Bay, and again took possession of Pensacola on the plea that the Spanish officials were aiding the Indians. It required all the skill of the government at Washington to defend his despotic acts, for he was as complete an autocrat in his limited sphere as Caesar or Napoleon. The only limits he regarded were the limits to his power. But in whatever he did, he had a firm conviction that he was right. Even John Quincy Adams justified his acts in Florida, when his enemies were loud in their complaints of his needless executions, especially of two British traders, Arbuthnot and Ambruter, whom he had court-martialled and shot as abettors of the Indians. He had invaded the territory of a neutral power and driven off its representatives; but everything was condoned. And when, shortly after, Florida became United States territory by purchase from Spain, he was made its first governor,—a new field for him, but an appointment which President Monroe felt it necessary to make.
In April, 1821, having resigned his commission in the army, Jackson left Nashville with his family to take up his residence in Pensacola, enchanted with its climate and fruits and flowers, its refreshing sea-breezes, and its beautiful situation, in spite of hot weather. As governor of Florida he was invested with extraordinary powers. Indeed, there was scarcely any limit to them, except that he had no power to levy and collect taxes, and seize the property of the mixed races who dwelt in the land of oranges and flowers. It would appear that, aside from arbitrary acts, he did all he could for the good of the territory, under the influence of his wife, a Christian woman, whom he indulged in all things, especially in shutting up grog-shops, putting a stop to play-going, and securing an outward respect for the Sabbath. His term of office, however, was brief, and as his health was poor, for he was never vigorous, in November of the same year he gladly returned to Nashville, and about this time built his well-known residence, the “Hermitage.” As a farmer he was unusually successful, making agriculture lucrative even with slave-labor.