Question: Which major river is Buford, North Dakota nearest to?
Sentence (from "Fort Henry on the Missouri River"): Fort Henry on the Missouri River, located at the mouth of the Yellowstone where it enters the Missouri, was established on October 1, 1822 by a party of men led by Major Andrew Henry, who mounted the expedition for the purpose of establishing a fur trade outpost for an area which now encompasses most of Montana, western North Dakota, parts of Wyoming, into Canada.
Relevant evidence: No