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1803 treaties
1803 in the United States
France–United States relations
French colonization of the Americas
History of United States expansionism
History of the American West
Louisiana (New France)
Midwestern United States
Pre-statehood history of Arkansas
Pre-statehood history of Colorado
Pre-statehood history of Idaho
Pre-statehood history of Iowa
Pre-statehood history of Kansas
Pre-statehood history of Louisiana
Pre-statehood history of Minnesota
Pre-statehood history of Missouri
Pre-statehood history of Montana
Pre-statehood history of Nebraska
Pre-statehood history of New Mexico
Pre-statehood history of North Dakota
Pre-statehood history of Oklahoma
Pre-statehood history of South Dakota
Pre-statehood history of Wyoming
Purchased territories
Treaties of the United States
Treaties of the French First Republic
Treaties involving territorial changes