Answer :
C. The United States accepted the 49th parallel as the border of the territory is the correct answer.
Clarification:
The territory gained under the Oregon treaty included all or part of the United States accepted the 49th parallel as the border for the territory. The arrangement between the US and Joined realm seared under President James K. Polk on June 15, 1846, in Washington D.C is called the Oregon arrangement. It tackled the Oregon limit debate and settled the English and American cases over the Oregon country as both nations had been mutually involved in the region since the Arrangement of 1818. The region was occupied by Local Americans. The arrangement set the 49th lined up as the halfway point between English North America and U.S.
This is incomplete question, here i am attaching the complete question.
the territory gained under the oregon treaty included all or part of which of the following modern-day states? [choose all that apply]
A .The United States gave most of the Oregon Territory to France
B .The United States acquired all of the Oregon Territory
C .The United States accepted the 49th parallel as the border for the territory
D .The United States accepted the 54th parallel as the border for the territory
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