Which 15 modern-day states were entirely or partially included in the Louisiana Purchase?

The Louisiana purchase states included the entirety of Iowa, Arkansas, Kansas, Missouri, Oklahoma, Nebraska, large areas of North Dakota and South Dakota, areas of Wyoming, Montana, and Colorado east of the continental divide, a portion of Minnesota, west of the Mississippi River, the northern portions of Texas, the northeastern part of New Mexico, New Orleans and areas of the present-day state of Louisiana west of the Mississippi River and small portions of the Canadian provinces of Alberta and Saskatchewan.

Explanation:

protectionism fosters competition and keeps price regulated is not an argument in favor of protectionism.