Answer:
A
Explanation:
look at he map carefully it has allot of the following
characteristics so it probably is A hope this helps!
I think it's B because all the slaves in the south were growing cotton
<span>The treaty was signed on June 15, 1846,
ending the joint occupation with Great Britain and making most
Oregonians below the 49th parallel American citizens. ... When the
Colony of British Columbia joined Canada in 1871, the 49th Parallel and
marine boundaries established by the Oregon Treaty became the Canada–US border.</span>