<em>Hello, The Louisiana Purchase was a land purchase made by United States president, Thomas Jefferson, in 1803. Thomas Jefferson approved the deal and used his constitutional power to sign treaties to buy the land. Napoleon Bonaparte sold the land because he needed money for the Great French War. The Louisiana Purchase of 1803 brought into the United States about 828,000 square miles of territory from France, thereby doubling the size of the young republic. An amendment of the Constitution seems necessary for this.” Jefferson drafted an amendment that would authorize the purchase of Louisiana retroactively. But Jefferson's cabinet members argued against the need for an amendment, and Congress disregarded his draft. The Senate ratified the treaty in October of 1803. Hope That Helps!</em>
