Answer:
C.) Great Britain ceded the Oregon Country to the United States to settle a dispute over boundaries.
Explanation:
After the civil war the expansion of the American territory began, in the decade of 1840 the Oregon Treaty was signed whose name is the "Treaty with Great Britain regarding the western limits of the Rocky Mountains" and the border between British and American sections of the "Oregon Territory". This had been occupied by the British and Americans since the Anglo-American convention of 1818 when it was accepted in the common domain of the region.
The treaty was negotiated by James Buchanan, the US Secretary of State and Richard Pakenham, the royal council member of Queen Victoria and special envoy of the queen.
The corrupt bargain created more public opposition to John Q. Adams and added fuel to the political fever for Andrew Jackson.
The third estate should have more political influence.
