The Louisiana Purchase Louisiana Purchase U.S. History: Westward Expansion: The Louisiana Purchase http://www.ushistory.org/us/20c.asp Westeward Expansion: The Louisiana Purchase Westward Expansion: The Louisiana Purchase [ushistory.org] Louisiana Purchase ushistory.org 24. The Luisiana Purchase Louisiana Purchase U.S. History: Westward Expansion: The Louisiana Purchase http://www.ushistory.org/us/20c.asp Louisiana Purchase Westward Expansion