Question

How did this map change following the Treaty of Washington in 1846?

The Oregon Country was divided between Britain and the United States at the 49th Parallel.
The Oregon Country was split into the Washington and Oregon Territories using the 49th Parallel as the new boundary.
The boundary between the Oregon Country and Mexico was shifted from the 42nd Parallel to the Oregon Trail route.
The portion of the Oregon Country below the 49th Parallel became part of Mexico, while the portion above the 49th Parallel became part of Great Britain.

Answer 1

Please provide the map, so I can gain further information about the question.

Answer 2

is that. good

Answer 3

Yes, that's okay.

Now, let's get down to business.

We can eliminate A.), C.), and D.)

A.) because it actually wasn't divided, as in equal pieces, it was split across the 49th parallel.

C.) Nothing involved Britain with the 42nd parallel

D.) This isn't true, as it was a split between Americans and British.

Background Information: https://historylink.org/File/5247

June 15, 1846, Britain and the United States sign the Treaty of Oregon establishing the 49th parallel as the primary international boundary in the Pacific Northwest. Since 1818, the entire region, including what is now Washington, Oregon, Idaho, and large portions of British Columbia, has been under joint occupancy, in which citizens of both countries travel and trade freely.

That concludes B.) is your correct answer.

Answer 4

wow thank you you are smart