Answer: D
Explanation:The significance of the Louisiana Purchase was that it allowed the United States to continue its westward expansion, it more than doubled the size of the U.S. and it kept the U.S. from going to war with France. It was a shrewd business move on Napoleon's part because he needed money for his war with England, and he knew he couldn't keep the Americans out of New Orleans without a fight, which he didn't have the military to cover.