William Eaton, the U.S. Consul to Tunis, to lead a force to restore the pasha's older brother to the throne. The American navy forced Tunis and Algiers into breaking their alliance with Tripoli. Jefferson ordered five separate naval bombardments of Tripoli, leading the pasha to sign a treaty that restored peace in the Mediterranean. This victory proved only temporary, but according to Wood, "many Americans celebrated it as a vindication of their policy of spreading free trade around the world and as a great victory for liberty over tyranny." Louisiana Purchase Spain ceded ownership of the Louisiana territory in 1800 to the more predominant France. Jefferson was greatly concerned that Napoleon's broad interests in the vast territory would threaten the security of the continent and Mississippi River shipping. He wrote that the cession "works most sorely on the U.S. It completely reverses all the political relations of the U.S." In 1802, he instructed James Monroe and Robert R. Livingston to negotiate with Napoleon to purchase New Orleans and adjacent coastal areas from France. In early 1803, Jefferson offered Napoleon nearly $10 million for of tropical territory. Napoleon realized that French military control was impractical over such a vast remote territory, and he was in dire need of funds for his wars on the home front. In early April 1803, he unexpectedly made negotiators a counter-offer to sell of French territory for $15 million, doubling the size of the United States. U.S. negotiators seized this unique opportunity and accepted the offer and signed the treaty on April 30, 1803. Word of the unexpected purchase did not reach Jefferson until July 3, 1803. He unknowingly acquired the most fertile tract of land of its size on Earth, making the new country self-sufficient in food and other resources. The sale also significantly curtailed the European presence in North America, removing obstacles to U.S. westward expansion. Most thought that this was an exceptional opportunity, despite Republican reservations about the Constitutional authority of the federal government to acquire land. Jefferson initially thought that a Constitutional amendment was necessary to purchase and govern the new territory; but he later changed his mind, fearing that this would give cause to oppose the purchase, and he, therefore, urged a speedy debate and ratification. On October 20, 1803, the Senate ratified the purchase treaty by a vote of 24–7. Jefferson personally was humble about acquiring the Louisiana Territory, but