Question: What treaty ended disputed joint occupancy of the region where Reverend Gustavus Hines was a missionary?

Context paragraphs:
Hewett Treaty: The Hewett Treaty, also called the Treaty of Adwa, was an agreement between Britain, Egypt and Ethiopia signed at Adwa on 3 June 1884.  The treaty ended a long-simmering conflict between Egypt and Ethiopia, but indirectly started a new conflict between Ethiopia and Italy.  It had seven articles.

Treaty of Lyubutsk: Treaty of Lyubutsk was a peace treaty signed in summer of 1372 between Algirdas, Grand Duke of Lithuania, and Dmitri Donskoi, Prince of Moscow.  The treaty ended the Lithuanian–Muscovite War (1368–72) and resulted in a seven-year peace period.

Ostrów Agreement: The Ostrów or Astrava Agreement (Lithuanian: "Astravos sutartis" , Belarusian: Востраўскае пагадненне , Polish: "Ugoda w Ostrowie" ) was a treaty between Jogaila (Władysław II Jagiełło), King of Poland and Grand Duke of Lithuania, and his cousin Vytautas the Great, signed on 4 August 1392.  The treaty ended the destructive Lithuanian Civil War, launched in 1389 by Vytautas who hoped to gain political power, and concluded the power struggle between the two cousins that erupted in 1380 after Jogaila secretly signed the Treaty of Dovydiškės with the Teutonic Knights.  The Ostrów Agreement did not stop attacks from the Teutonic Knights and the territorial dispute over Samogitia continued up to 1422.  According to the treaty, Vytautas became the ruler of Lithuania (styled Grand Duke), but he also acknowledged Jogaila's (styled Supreme Duke) rights to Lithuania.  The details of the Polish–Lithuanian relationship were clarified in several later treaties, including the Union of Vilnius and Radom in 1401 and Union of Horodło in 1413.

Oregon Country: The Oregon Country was a predominantly American term referring to a disputed region of the Pacific Northwest of North America.  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.  The Oregon Treaty of 1846 ended disputed joint occupancy pursuant to the Treaty of 1818 and established the British-American boundary at the 49th parallel (except Vancouver Island).

Treaty of Versailles: The Treaty of Versailles (French: "Traité de Versailles" ) was the most important of the peace treaties that brought World War I to an end.  The Treaty ended the state of war between Germany and the Allied Powers.  It was signed on 28 June 1919 in Versailles, exactly five years after the assassination of Archduke Franz Ferdinand.  The other Central Powers on the German side of World War I signed separate treaties.  Although the armistice, signed on 11 November 1918, ended the actual fighting, it took six months of Allied negotiations at the Paris Peace Conference to conclude the peace treaty.  The treaty was registered by the Secretariat of the League of Nations on 21 October 1919.

Occupancy–abundance relationship: In ecology, the occupancy–abundance (O–A) relationship is the relationship between the abundance of species and the size of their ranges within a region.  This relationship is perhaps one of the most well-documented relationships in macroecology, and applies both intra- and interspecifically (within and among species).  In most cases, the O–A relationship is a positive relationship.  Although an O–A relationship would be expected, given that a species colonizing a region must pass through the origin (zero abundance, zero occupancy) and could reach some theoretical maximum abundance and distribution (that is, occupancy and abundance can be expected to co-vary), the relationship described here is somewhat more substantial, in that observed changes in range are associated with greater-than-proportional changes in abundance.  Although this relationship appears to be pervasive (e.g. Gaston 1996 and references therein), and has important implications for the conservation of endangered species, the mechanism(s) underlying it remain poorly understood

Treaty of the Dardanelles: The Treaty of the Dardanelles (also known as the Dardanelles Treaty of Peace, Commerce, and Secret Alliance, the Treaty of Çanak, the Treaty of Chanak or Turkish: "Kale-i Sultaniye Antlaşması" ) was concluded between the Ottoman Empire and the United Kingdom of Great Britain and Ireland on 5 January 1809 at Çanak, Ottoman Empire.  The treaty ended the Anglo-Turkish War.  The Porte restored extensive British commercial and legal privileges in the empire.  The United Kingdom promised to protect the integrity of the Ottoman Empire against the French threat, both with its own fleet and through weapons supplies to Constantinople.  The treaty affirmed the principle that no warships of any power should enter the Straits of the Dardanelles and the Bosporus.  The treaty anticipated the London Straits Convention of 1841, by which the other major powers committed themselves to this same principle.

Treaty of San Stefano: The Preliminary Treaty of San Stefano (Russian: Сан-Стефанский мир; Peace of San-Stefano, Сан-Стефанский мирный договор; Peace treaty of San-Stefano, Turkish: "Ayastefanos Muahedesi" or "Ayastefanos Antlaşması") was a treaty between Russia and the Ottoman Empire signed at San Stefano, then a village west of Constantinople, on 3 March [O.S. 19 February] 1878 by Count Nicholas Pavlovich Ignatiev and Aleksandr Nelidov on behalf of the Russian Empire and Foreign Minister Safvet Pasha and Ambassador to Germany Sadoullah Bey on behalf of the Ottoman Empire.  The treaty ended the Russo-Turkish War, 1877–78.

Treaty of Hubertusburg: The Treaty of Hubertusburg (German: "Frieden von Hubertusburg" ) was signed on 15 February 1763 at Hubertusburg Castle by Prussia, Austria and Saxony to end the Third Silesian War.  Together with the Treaty of Paris, signed five days earlier, it marked the end of the Seven Years' War.  The treaty ended the continental conflict with no significant changes in prewar borders.  Austria and Saxony renounced all claims to the Silesian territories ceded to Prussia in the 1742 Treaty of Berlin and the 1745 Treaty of Dresden.  Prussia clearly stood among the ranks of the European great powers, while the treaty enhanced the rivalry with Austria.

Gustavus Hines: Reverend Gustavus Hines (September 6, 1809 – December 9, 1873) was an American missionary in Oregon Country.  Working for the Methodist Mission in what became the state of Oregon, the New York native became involved in early attempts to form a government at the Champoeg Meetings in 1841.  Later he served on the Board of Trustees for the Oregon Institute, which became Willamette University, and wrote several books on Oregon.

Supporting paragraphs: Gustavus Hines Oregon Country
Answer: The Oregon Treaty of 1846