*Thomas Jefferson (President of the United States):*
Jefferson was a chief architect of the Louisiana Purchase. He saw the acquisition as a way to secure vital western territories and expand the American empire. He authorized the negotiations and provided guidance to the American envoys.
*Robert R. Livingston (American Minister to France):*
Livingston was the U.S. minister to France during the time of the negotiations. He played a crucial role in securing the deal with France. He remained dedicated to the task and worked closely with James Monroe to facilitate the purchase.
*James Monroe (U.S. Envoy Extraordinary and Minister Plenipotentiary):*
Monroe was a special envoy sent by Jefferson to assist Livingston in the negotiations. He served as an agent of the U.S. government in Paris and worked diligently with Livingston to finalize the Louisiana Purchase agreement with the French government.
*François Barbé-Marbois (French Minister of the Treasury):*
Barbé-Marbois served as the French Minister of the Treasury at the time of the Louisiana Purchase. He played a significant role in the transaction from the French side. He was directly involved in the negotiations with the American envoys and negotiated the final terms of the agreement.
*Napoleon Bonaparte (Emperor of the French):*
Napoleon Bonaparte was the Emperor of the French during the Louisiana Purchase. The decision to sell Louisiana to the United States was made by Napoleon. He saw the sale as a way to gain funds for his war efforts in Europe and to prevent Louisiana from falling into the hands of another rival nation.