In 1798, Spain revoked the treaty that authorized the American use of New Orleans, which greatly angered the Americans. In 1801, the Spanish governor Don Juan Manuel de Salcedo succeeded the Marquis Casa Calvo and restored the American right to deposit goods. By 1800, however, Spain had withdrawn the Louisiana Territory from France as part of Napoleon de San Ildefonso`s third secret treaty.  The region remained nominally under Spanish control until a transfer of power to France on November 30, 1803, just three weeks before the official cession of the territory to the United States on December 20, 1803.  Although rumors of the purchase of the monroe and livingston preceded it, their message reached Washington in time for an official announcement on July 4, 1803. The Louisiana Purchase (French: Sale of Louisiana) was the acquisition of the Louisiana Territory by the United States of France in 1803. In exchange for fifteen million dollars, or about eighteen dollars per square mile, the United States theoretically acquired a total of 828,000 square miles (2,140,000 km2; 530,000,000 acres). However, France controlled only a small fraction of this territory, most of which was inhabited by American Indians; For most of the territory, the United States purchased the “preventive” right to obtain Indian lands by treaty or conquest to the exclusion of other colonial powers.   The total cost of all subsequent contracts and financial arrangements for the country has been estimated at approximately $2.6 billion.
  Federalists and Jeffersonians were concerned about the constitutionality of the purchase. Many members of the House of Representatives rejected the purchase. Majority Leader John Randolph led the opposition. The House of Representatives called for a vote to reject the purchase request, but failed by two votes, 59 to 57. The federalists even tried to prove that the country belonged to Spain, not France, but the available documents proved otherwise.  Federalists also feared that the power of the Atlantic states would be threatened by the new citizens of the West, whose political and economic priorities would clash with those of New England merchants and bankers. There were also fears that an increase in the number of slave states created from the new territory would also exacerbate the divisions between North and South. A group of northern federalists led by Senator Timothy Pickering of Massachusetts went so far as to explore the idea of a separate northern confederacy. Previous treaties that transferred ownership of Louisiana between France and Spain never included the separation of borders. For these reasons, no one knew what the purchase meant in size, and no one had a realistic idea of how their entire land should appear on a map. The Americans believed that Napoleon could withdraw the offer at any time to prevent the United States from acquiring New Orleans, so they accepted and signed the Louisiana Purchase Treaty on April 30, 1803 at the Hôtel Tubeuf in Paris.
 The signatories were Robert Livingston, James Monroe and François Barbé-Marbois.  After the signing, Livingston said, “We have lived a long time, but this is the noblest work of our entire lives.