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West Florida

European colony in North America (1763–1821)

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Through Mississippi

As the newly acquired territory was too large to govern from one administrative center, the British divided it into two new colonies separated by the Apalachicola River. British West Florida included the part of former Spanish Florida, which lay west of the Apalachicola, as well as parts of former French Louisiana. Its government was based in Pensacola. West Florida thus encompassed all territory between the Mississippi and Apalachicola Rivers, with a northern boundary which shifted several times over the subsequent years.

Both West and East Florida remained loyal to the British crown during the American Revolution, and served as havens for Tories fleeing from the Thirteen Colonies. Spain invaded West Florida and captured Pensacola in 1781, and after the war Britain ceded both Floridas to Spain. However, the lack of defined boundaries led to a series of border disputes between Spanish West Florida and the fledgling United States known as the West Florida Controversy.

Because of disagreements with the Spanish government, American and British settlers between the Mississippi and Perdido rivers declared that area as the independent Republic of West Florida in 1810. No part of that short-lived republic lay within the borders of the modern U.S. state of Florida; rather, it comprised the Florida parishes of today's Louisiana. Within months it was annexed by the United States, which claimed the region as part of the Louisiana Purchase of 1803. In 1819, the United States negotiated with Spain the acquisition of the remaining portion of West Florida and all of East Florida through the Adams–Onís Treaty. The United States formally took possession in 1821, in exchange for renouncing its claims to Spanish Texas. In 1822, the two regions were merged to form the Florida Territory.

Background

The area known as West Florida was originally claimed by Spain as part of La Florida, which included most of what is now the southeastern United States. Spain made several attempts to conquer and colonize the area, notably including Tristán de Luna's short-lived settlement in 1559, but it was not settled permanently until the 17th century, with the establishment of missions to the Apalachee. In 1698, the settlement of Pensacola was established to check French expansion into the area.

Beginning in the late 17th century, the French established settlements along the Gulf Coast and in the region as part of their colonial La Louisiane, including Mobile (1702) and Fort Toulouse (1717) in present-day Alabama and Fort Maurepas (1699) in present-day coastal Mississippi. After years of contention between France and Spain, they agreed to use the Perdido River (the modern border between Florida and Alabama) as the boundary between French Louisiana and Spanish Florida.

Before 1762, France had owned and administered the land west of the Perdido River as part of La Louisiane. The secret Treaty of Fontainebleau, concluded in 1762 but not made public until 1764, had effectively ceded to Spain all of French Louisiana west of the Mississippi River, as well as the Isle of Orleans.

However, under the treaty that had concluded the French and Indian War (Seven Years' War) in 1763, Britain obtained immediate title to all of French La Louisiane east of the Mississippi River. This included the land between the Perdido and Mississippi. Spain also ceded to Great Britain its territory of La Florida, in exchange for Cuba, which the British had captured during the war. As a result, for the next two decades, the British controlled nearly all of the coast of the Gulf of Mexico east of the Mississippi River. With the British taking over Florida, most of the Spanish population left Florida for Cuba and Mexico.

Spain, meanwhile, failed to make good by occupancy its title to Louisiana until 1769, when it took formal possession. For six years, therefore, Louisiana as France possessed it, and as Spain received it, included none of the territory between the Mississippi and Perdido rivers, as the title to that territory had passed immediately from France to Britain in 1763.

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