For 10 points, name this president during the Era of Good Feelings who had a namesake doctrine.
In response to an economic downturn, he signed a bill that disallowed purchasing federal land on credit but decreased the price of that land to a dollar twenty five an acre. After the ambush of a trapping expedition, he sent Henry Leavenworth to suppress the Arikara tribe. This man's term saw the negotiation of a treaty sometimes named for the year of its signing or called the London Convention which corrected the Mitchell Map and set the Canadian border at the 49th parallel. Other treaties signed during his term include one which demilitarized the Great Lakes and another that set borders along the Arkansas and Red Rivers and acquired Florida from Spain. Although he presided over the Rush-Bagot and Adams-Onis treaties, his most famous contribution to foreign policy states that European interference in the Western hemisphere would not be tolerated. For 10 points, name this president during the Era of Good Feelings who had a namesake doctrine.
In response to an economic downturn, he signed a bill that disallowed purchasing federal land on credit but decreased the price of that land to a dollar twenty five an acre.
James {Monroe}