Question: James K. Polk ended a binary dispute with the British in 1846 with what treaty?

Context paragraphs:
Presidency of James K. Polk: The presidency of James K. Polk began on March 4, 1845, when he was inaugurated as the 11th President of the United States, and ended on March 4, 1849.  James K. Polk, a Democrat, assumed office after defeating Whig Henry Clay in the 1844 presidential election.  Polk left office after one term, fulfilling a campaign pledge he made in 1844, and he was succeeded by Whig Zachary Taylor.  A close ally of Andrew Jackson, Polk's presidency reflected his adherence to the ideals of Jacksonian democracy and manifest destiny.

Inauguration of James K. Polk: The inauguration of James K. Polk as the 11th President of the United States took place on Tuesday, March 4, 1845, a rainy day with morning thunderstorms.  The inauguration marked the commencement of the only four-year term of James K. Polk as President and George M. Dallas as Vice President.  Polk was sworn in at the East Portico of the United States Capitol by Chief Justice Roger B. Taney.  This was the first inaugural ceremony to be reported by telegraph and to be shown in a newspaper illustration (in "The Illustrated London News").

Oregon Treaty: The Oregon Treaty is a treaty between the United Kingdom and the United States that was signed on June 15, 1846, in Washington, D.C. Signed under the presidency of James K. Polk, the treaty brought an end to the Oregon boundary dispute by settling competing American and British claims to the Oregon Country; the area had been jointly occupied by both Britain and the U.S. since the Treaty of 1818.

James K. Polk: James Knox Polk (November 2, 1795 – June 15, 1849) was the 11th President of the United States (1845–49).  He previously served as the 13th Speaker of the House of Representatives and as Governor of Tennessee.  A protege of Andrew Jackson, Polk was a member of the Democratic Party and an adherent of Jacksonian democracy and Manifest Destiny.  During his presidency, the United States expanded significantly with the annexation of Republic of Texas, the Oregon Treaty, and the conclusion of the Mexican-American War.

President James K. Polk Historic Site: The President James K. Polk Historic Site is a museum and historic location in Mecklenburg County, North Carolina, and a historic site managed by the North Carolina Department of Natural and Cultural Resources' Historic Sites division.  The property was the location of property owned by the parents of President James K. Polk, and exhibits at the historic site serve to tell the story of the President's political career, as well as provide a look into life in North Carolina in the early 19th Century.

James K. Polk (song): "James K. Polk" is a song by alternative rock band They Might Be Giants, about the United States president of the same name.  Originally released in 1990 as a B-side to the single "Istanbul (Not Constantinople)", its first appearance on a studio album was 1996's "Factory Showroom".  It also appeared on their compilation albums "" and "A User's Guide to They Might Be Giants".  The song is about James K. Polk, 11th President of the United States, beginning with a description of the 1844 Democratic National Convention and going on to cover some of the highlights of Polk's presidency.  Although the band set out to write a song consisting entirely of historical facts, it includes a few errors or misstatements.

Polk Place: Polk Place was the home of 11th President of the United States James K. Polk and his wife Sarah Childress Polk on Vine Street in Nashville, Tennessee, which he purchased from his mentor Felix Grundy.  It was called "Grundy Place" and was changed to "Polk Place."  It was his final residence and where he died in 1849 at age 53.  After his death his wife continued to reside there.  During the Civil War, Polk Place was considered neutral ground by both the Confederate and Union armies.  In spite of the fact that she had nephews fighting on the Confederate side, Union Generals Ulysses S. Grant and Don Carlos Buell frequently paid their respects to the former first lady.  After a short illness, Mrs. Polk died at Polk Place in 1891, just short of her 88th birthday.  James K. Polk's tomb was located on the front lawn until 1893, when it was moved to the Tennessee State Capitol.  What followed was a long legal dispute centered on James K. Polk's will, after which the heirs of President and Mrs. Polk sold Polk Place.  The state of Tennessee nearly acquired Polk Place and made it the governor's mansion (at the time, the governor of Tennessee stayed in a hotel room).  A developer bought the house and had it demolished in 1900 to build a small apartment building.  The YWCA bought the property in 1909 and built a new state-of-the-art facility.  They sold the building in 1978 and moved to Woodmont Avenue.  The Capitol Hotel (formerly Best Western) now occupies the former site of Polk Place.

James K. Polk Ancestral Home: The James K. Polk Ancestral Home, also known as James K. Polk Home State Historic Site, is a historic house museum at 301 West 7th Street in Columbia, Tennessee.  Built in 1816, it is the only surviving private residence of United States President James K. Polk.  It was designated a National Historic Landmark in 1961, and is listed on the National Register of Historic Places.  It is open daily except select holidays for guided tours.

Tennessee Performing Arts Center: The Tennessee Performing Arts Center, or TPAC, is located in the James K. Polk Cultural Center at 505 Deaderick Street in downtown Nashville, Tennessee, occupying an entire city block between 5th and 6th Avenues North and Deaderick and Union Streets.  Also housing the Tennessee State Museum, the cultural center adjoins the 18-story James K. Polk State Office Building.

Rivers and Harbors Bill: The Rivers and Harbors Bill was a bill passed by Congress in 1846 to provide $500,000 to improve rivers and harbors.  When the Senate passed the Rivers and Harbors Bill 34 to 16 on July 24, 1846, opponents lobbied for a presidential veto.  It was vetoed by President James K. Polk on August 3.  The bill would have provided for federally funded internal improvements on small harbors, many of them on the Great Lakes.  Polk believed that this was unconstitutional because the bill unfairly favored particular areas, including that which had no foreign trade.

Supporting paragraphs: James K. Polk Oregon Treaty
Answer: The Oregon Treaty