1. The reason that the French re-possession of the Louisiana Territory unnerved the United States was that the United States feared that, if France under Napoleon Bonaparte dominated the Mississippi River with access to the Mexican Gulf, the United States would be weakened strategically and would be unable to expand its territory westward.
2. Thomas Jefferson sent James Monroe to France to negotiate for the purchase of New Orleans, including West Florida.
James Monroe was appointed as a special envoy to France. He joined the American Ambassador in France, Robert Livingston.
3. The French fear of Great Britain helped the United States in the successful purchase of the Louisiana Territory because the coming war with Great Britain would engender a British naval blockade of France.
4. France officially transferred the Louisiana Territory over to the United States on Tuesday, December 20, 1803, while the United States took possession 10 days later.
5. The first state to be admitted to the United States was the state of Louisiana. It was admitted on April 30, 1812, as the 18th State of the United States.
6. The states that eventually emerged from the Louisiana land deal were 15 in number during the presidency of Thomas Jefferson.
Some of the 15 were partly joined by other states.
The Louisiana Land Purchase was one of the most important achievements of Thomas Jefferson's presidency because it doubled the territory of the United States, enabling it to expand westward as part of the acclaimed Manifest Destiny.
Thus, the land deal known as the Louisiana Land Purchase marked an important moment in the history of the United States.
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