Louisiana Purchase

The Louisiana Purchase is more then 800,000 square miles of territory purchased by the United States from France in 1803. The purchase contained parts or all of present-day Arkansas, Missouri, Iowa, Minnesota west of the Mississippi River, North Dakota, South Dakota, Nebraska, Oklahoma, nearly all of Kansas, the portions of Montana, Wyoming, and Colorado east of the Rocky Mountains, and Louisiana west of the Mississippi River but including the city of New Orleans.

Public domain picture from U.S. National Archives and Records Administration