How did the United States acquire Florida

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Florida in 1822 - 1 year after it was ceded to the US by Spain

The colonies of East Florida and West Florida remained loyal to the British during the war for American independence, but by the Treaty of Paris in 1783, they returned to Spanish control. Spain's control over Florida was precarious. Over time, after Americans began to move into the territory, it became clear that Spain would not be able to maintain authority over the region. Ultimately, Florida was handed over to the United States under the terms of the Onís-Adams Treaty of 1819.

Americans move into Florida during the American Revolution

After 1783, American immigrants moved into West Florida. In 1810, these American settlers in West Florida rebelled, declaring independence from Spain. President James Madison and Congress used the incident to claim the region, knowing full well that the Spanish government was seriously weakened by Napoleon’s invasion of Spain. The United States asserted that the portion of West Florida from the Mississippi to the Perdido rivers was part of the Louisiana Purchase of 1803. Negotiations over Florida began in earnest with the mission of Don Luis de Onís to Washington in 1815 to meet Secretary of State James Monroe. The issue was not resolved until Monroe was president and John Quincy Adams his Secretary of State.

John Qunicy Adams Committed to American Expansion

Andrew Jackson

While West Florida had already been annexed by the United States, no one recognized the American claim. Still, Spain was incredibly weak and had little control over its territory. Spain's weakness gave the United States a unique opportunity to seize Florida. In addition to Spain's troubles, the Secretary of War, Henry Calhoun, had dispatched Andrew Jackson to quell Seminole raids into Western Florida and Georgia. This military action quickly became the First Seminole War. As part of this action, Jackson moved into Spanish territory without consent.[1]

U.S.-Spanish relations were extremely strained because justifiably believed that the American support for the independence struggles of Spanish-American colonies was an overt attempt to seize Florida. The situation became even more critical when General Andrew Jackson thrust into Florida resulted in the seizure of the Spanish forts at Pensacola and St. Marks in his 1818. Additionally, he drove further into Florida when he sought to kill Seminoles and escaped slaves who he viewed as a threat to Georgia. Jackson even executed two British citizens on charges of inciting the Indians and runaways.

Spain had few options, but negotiate with the US

Monroe’s government seriously considered denouncing Jackson’s actions, but Adams defended the Jackson citing the necessity to restrain the Indians and escaped slaves since the Spanish failed to do so. Adams also sensed that Jackson’s Seminole campaign was popular with Americans and it strengthened his diplomatic hand with Spain. Adams used Jackson’s military action to present Spain with a demand to either control the inhabitants of East Florida or cede it to the United States. Minister Onís, due to France's takeover by Napoleon, left Spain with few reasonable options. Florida was not able or particularly interested in maintaining its presence in Florida.

The United States acquired Florida from Spain with the Onís-Adams Treaty of 1819

Minister Onís and Secretary Adams reached an agreement whereby Spain ceded East Florida to the United States and renounced all claim to West Florida. Spain received no compensation, but the United States agreed to assume liability for $5 million in damage done by American citizens who rebelled against Spain. Under the Onís-Adams Treaty of 1819 (also called the Transcontinental Treaty and ratified in 1821) the United States and Spain defined the western limits of the Louisiana Purchase and Spain surrendered its claims to the Pacific Northwest. In return, the United States recognized Spanish sovereignty over Texas. While Spain's rights to Texas were recognized, that situation changed extraordinarily fast when Mexico received its sovereignty on September 27, 1821.


References

  1. Alan Brinkley, American History, 11th edition (McGraw Hill, 2003), p. 226.