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The colonies of East Florida and West == Why did Americans move into 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. Revolution? ==After 1783, Americans 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 that Napoleon’s invasion of Spain seriously weakened the Spanish government. 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 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.

In 1810, these American settlers in == Why John Qunicy Adams expand into Florida? ==[[File:Andrew_Jackson_by_Ralph_E._W._Earl_1837.jpg|thumbnail|left|250px|Andrew Jackson]]While the United States had already annexed West Florida rebelled, declaring independence from Spain. President James Madison and Congress used no one recognized the incident to American claim the region. Still, knowing full well that the Spanish government Spain was seriously weakened by Napoleon’s invasion of incredibly weak and had little control over its territory. Spain. The 's weakness gave the United States asserted that a unique opportunity to seize Florida. In addition to Spain's troubles, the portion Secretary of West War, Henry Calhoun, had dispatched Andrew Jackson to quell Seminole raids into Western Florida from and Georgia. This military action quickly became the Mississippi to the Perdido rivers was First Seminole War. As part of the Louisiana Purchase of 1803this action, Jackson moved into Spanish territory without consent.<ref>Alan Brinkley, [https://www.amazon.com/gp/product/0077776755/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0077776755&linkCode=as2&tag=dailyh0c-20&linkId=588edbe5327b76ccc9ede6e741ba22cc American History], 11th edition (McGraw Hill, 2003), p. 226.</ref>

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

== Why did Spain give Florida to the United States? ==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 , strengthening 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.

== What was the Onís-Adams used the Jackson’s military action to present Spain with a demand to either control the inhabitants Treaty of East Florida or cede it to the United States. 1819? ==Minister Onís and Secretary Adams reached an agreement whereby Spain ceded East Florida to the United States and renounced all claim claims 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 Louisiana Purchase's 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.