The British did not rule Florida for long. The colonies north of Florida were overrun by British rule and decided to fight for independence. They started a war known as the American Revolution. During this period, the settlers who fought for independence were known as patriots. Those who sided with Britain were called loyalists. France`s participation was decisive for the British defeat. Spain`s contribution was also important.  By allying with foreign monarchies, the United States took advantage of the power struggles within European imperialism and essentially formed a united front against Britain. The new nation sought to spread the republican that could threaten the Spanish colonies, and did so later in the Wars of Independence of Latin America. Nevertheless, Spain supported its geopolitical interests throughout the war. Historian Thomas A. Bailey says about Spain: the Spanish-Portuguese War (1776-77) proved to be a success.
In the first contract of San Ildefonso, signed on October 1, 1777 after the liberation of Maria I of Portugal Pombal, Spain won the Oriental Banda (Uruguay) with Colonia del Sacramento, founded by Portugal in 1680.  Spain also won the Eastern Misiones. In return, Spain recognized that the Portuguese territories of Brazil extended well west of the line drawn by the Treaty of Tordesillas.  In the Treaty of El Pardo, signed on 11 March 1778, Spain won Spanish Guinea (Equatorial Guinea), managed from Buenos Aires between 1778 and 1810. With these treaties, Portugal had left the war and in 1781 Portugal joined the First Division of Armed Neutrality to oppose British seizures of cargoes of neutral ships.  Treaties are agreements between and between nations. Treaties have been used to end wars, settle land disputes and even destabilize new countries. The Treaty of Paris, also known as the Treaty of 1763, was signed on 10 February 1763 by the kingdoms of Great Britain, France and Spain with Portugal after Britain`s victory over France and Spain during the 7-year war. The signing of the treaty officially ended the Seven Years` War, known as the French and Indian war in North American theatre, and marked the beginning of an era of British domination outside Europe. The treaty did not include Prussia and Austria, since five days later they signed a separate agreement, the Treaty of Hubertusburg. The Treaty of Hubertusburg was signed on 15 February 1763 by Prussia, Austria and Saxony. With the Treaty of Paris, it marked the end of the seven-year war.
The treaty ended the continental conflict without major changes to the pre-war borders. Above all, Silesia remained Prussian. The treaty, although it restored the pre-war status quo, marked the rise of Prussia as a leading European power. With the Treaty of Paris, Britain became the world`s largest colonial empire, which was its main objective in the war, and France lost most of its overseas assets. The term “Hubertsburg-Frieden” is sometimes used as a description of any treaty that restores the pre-conflict situation. The Treaty of Paris is often cited as the France that Louisiana gives to Spain.   The transfer agreement had, however, been concluded with the contract of Fontainebleau (1762), but was not made public until 1764. The Treaty of Paris gave the United Kingdom the eastern side of the Mississippi (including Baton Rouge, Louisiana, which was to be part of the British territory of West Florida).