Florida Territory
Beginning in late 1835, Osceola and the Seminole allies began a guerrilla war against the U.S. forces. Numerous generals fought and failed, succumbing to the heat and disease as well as lack of knowledge of the land. It was not until General Thomas Jesup captured many of the key Seminole chiefs, including Osceola who died in captivity of illness, that the battles began to die down. The Seminoles were eventually forced to migrate. Florida joined the Union as the 27th state on March 3, 1845. By this time, almost all of the Seminoles were gone, except for a small group living in the Everglades.
Severn Teackle Wallis
In 1847 he visited Spain and in 1849 the U. S. Government sent him on a special mission to that country to examine the title to the public lands in their former colony of East Florida (on the peninsula), as affected by royal Spanish Crown grants during the negotiations for the treaty of 1819, which provided for the American annexation of Florida, and creation of the Territory of Florida.