After the War of 1812, relations between Britain and the USA remained difficult, with border disputes in Maine. In 1841 when Peel took office, the situation was bad enough to call for naval deployments in case of war. Peel dispatched Lord Ashburton, who had an American wife, as a special envoy. By the treaty, signed in April, Britain dropped the right of maritime search, the Maine border was adjusted, and the boundary with Canada agreed as the 49th parallel.
Subjects: British History — History of the Americas.