On October 20, 1803, the Senate approved for ratification a treaty with France by which the United States purchased the Louisiana Territory. ... Jefferson instructed the American minister in Paris to try to purchase the city of New Orleans and the Florida Panhandle, for which Congress had appropriated $2 million.
The original 4 countries which held claims to the Oregon Country were Russia, Spain, Great Britain and Spain, Spain in which dropped out and the claim later went to the United States
