Jada Ford 11-17-11 Mrs. Link Louisiana Purchase 1802 - October 15 - Carlos finally signs the papers handing over Louisiana to France 1802 - October 16 - Spain withdraws US right to the Mississippi and deposit in New Orleans 1803 - March - Thomas Jefferson sends Robert Livingston and then Jason Monroe to negotiate in Paris 1803 - April 30 - Louisiana Purchase; ratified October 31st after being approved the previous day by Congress 1804 - Lewis and Clark set off; government of Louisiana under US commences 1806 - Lewis and Clark return 1812 - War with England 1