A Black sailor who settled near the north end of this geographical area, James D. Saules, clashed with locals in the Cockstock affair. A “meridian” and “baseline” named for this geographical area defined the grid along which land patents were issued under the Donation Land Claim Act. In the 1850s, this specific geographical area’s native people, like the Clackamas and (-5[1])Kalapuya, were forcibly moved to the Grand Ronde Reservation, where they’ve more recently called for the return (15[1])of this area’s namesake (*) meteorite. (10[2]-5[1])The north end of the Siskiyou Trail (10[1])ran through this geographical area, whose town (-5[2])of Champoeg (“sham-POO-eg”) was the site of 1840s “wolf meetings” that formed its region’s first provisional government. (10[1])This valley was the (10[1])endpoint (-5[1])of a route (10[1])that (10[1])passed landmarks like Fort Kearney and Chimney Rock. (10[1])For 10 points, (10[1])what fertile (10[1])valley was the final destination for settlers on the Oregon Trail? ■END■ (10[3]0[1])