<P> The opposition of New England Federalists to the Louisiana Purchase was primarily economic self - interest, not any legitimate concern over constitutionality or whether France indeed owned Louisiana or was required to sell it back to Spain should it desire to dispose of the territory . The Northerners were not enthusiastic about Western farmers gaining another outlet for their crops that did not require the use of New England ports . Also, many Federalists were speculators in lands in upstate New York and New England and were hoping to sell these lands to farmers, who might go west instead, if the Louisiana Purchase went through . They also feared that this would lead to Western states being formed, which would likely be Republican, and dilute the political power of New England Federalists . </P> <P> When Spain later objected to the United States purchasing Louisiana from France, Madison responded that America had first approached Spain about purchasing the property, but had been told by Spain itself that America would have to treat with France for the territory . </P> <P> The Louisiana Purchase Treaty was signed on 30 April by Robert Livingston, James Monroe, and Barbé Marbois in Paris . Jefferson announced the treaty to the American people on July 4 . After the signing of the Louisiana Purchase agreement in 1803, Livingston made this famous statement, "We have lived long, but this is the noblest work of our whole lives...From this day the United States take their place among the powers of the first rank ." </P> <P> The United States Senate advised and consented to ratification of the treaty with a vote of twenty - four to seven on October 20 . The Senators who voted against the treaty were: Simeon Olcott and William Plumer of New Hampshire, William Wells and Samuel White of Delaware, James Hillhouse and Uriah Tracy of Connecticut, and Timothy Pickering of Massachusetts . </P>

Where did the united states and france sign the treaty to sell the louisiana territory