Question: What treaty ended disputed joint occupancy of the region where Reverend Gustavus Hines was a missionary?
Sentence (from "Oregon Country"): The region was occupied by British and French Canadian fur traders from before 1810, and American settlers from the mid-1830s, with its coastal areas north from the Columbia River frequented by ships from all nations engaged in the maritime fur trade, most of these from the 1790s through 1810s being Boston-based.
Relevant evidence: No