Which of the following best describes the louisiana purchase? thomas jefferson and congress approved the louisiana purchase from spain in 1803 for only three hundred dollars per acre and a total of 15 million dollars. president jefferson purchased new orleans from france by sending james monroe to make a generous offer for the land approved by congress. thomas jefferson purchased the louisiana territory from napoleon bonaparte in 1803 for 15 million dollars, although some americans felt the purchase was unconstitutional. james monroe offered napoleon bonaparte a treaty that included exchanging the louisiana territory for an end to the u. s. alliance with britain in their war against france.