The missisipi river formed western boundary
Explanation:
Dr. Marcus Whitman (1802-1847),his wife Narcissa Prentiss Whitman ...The atta k,a pivotal event in northwest history . will lead to a war of retaliation ... " He wanted to see the country settled," wrote Reverend Henry K. Perkins ... Tribal leaders made several efforts to get the Whitman's to leave, to the point of
The answer is the first one