The territory embraced within the state of Florida was not acquired by the United States through direct purchase from Spain. The treaty ceding this territory was drawn around a claim clause of this country and its citizens against the Spanish government for alleged damages for various reasons. The United States government agreed to cancel its claims and assume the payment of those of its citizens to an amount not exceeding five million dollars, in consideration of which Spain ceded Florida. The transfer of government was accomplished in July, 1821; whereupon General Andrew Jackson became provisional governor.
Davis, T. Frederick
"The Seminole Council, October 23-25, 1834,"
Florida Historical Quarterly: Vol. 7
, Article 5.
Available at: https://stars.library.ucf.edu/fhq/vol7/iss4/5