Question: Which 15 U.S. states were formed from the Louisiana Purchase?
Answer: On October 20, 1803, the U.S. Senate approved the ratification of a treaty with France that secured the purchase of the Louisiana Territory. This historic agreement effectively doubled the size of the nation, adding land that would eventually form 15 new states—Louisiana, Arkansas, Missouri, Iowa, Oklahoma, Texas, Kansas, Nebraska, North Dakota, South Dakota, and portions of Minnesota, New Mexico, Montana, Wyoming, and Colorado.
