Louisiana Purchase
Also known as: Vente de la Louisiane
The Louisiana Purchase was the acquisition of the territory of Louisiana by the United States from the French First Republic in 1803.
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territorial acquisition that included the river's drainage basin
The 1803 purchase from France brought the majority of the Red River's watershed under United States control, facilitating westward expansion.
territorial acquisition that necessitated the trails
The 1803 acquisition of the Louisiana Territory doubled the size of the United States, creating the vast western lands that the trails were designed to traverse.
geopolitical acquisition of the Great Plains
The 1803 purchase from France brought the majority of the Great Plains under United States control, facilitating future westward expansion.