The settlement of the territorial claims of Great Britain and the United States of America were reached on November 30, 1782. The Treaty of Paris established the Southern boundary of the U.S. at the 31st parallel north. Great Britain would retain possession of Florida's.
Spain had won possession of West Florida by military conquest on May 9, 1781. On September 3, 1783, Great Britain ceded both east and west Florida to Spain. No northern boundary was fixed for Florida's under this Treaty of Cession. Spain claimed the northern boundary to be at 32 degrees 28 minutes North latitude as fixed by the British Royal Proclamation of 1767. The United States claimed the northern boundary to be at 31 degrees north latitude, as fixed by the Treaty of Paris.
The conflicting terms of the two treaties led to conflict between the two powers over the territory lying between 31 degrees north and 32 degrees 28 minutes" north latitude. This conflict was settled on October 27, 1795, when,
under the terms of the treaty of San Lorenzo El Real, the southern boundary of the United States was again fixed at the 31st parallel.