1871–1872 Colorado River expedition

Target entity: 1871–1872 Colorado River expedition
Context triple: [John Wesley Powell, expedition, 1871–1872 Colorado River expedition]

• A. Exploration of the Colorado River of the West and Its Tributaries
  Exploration of the Colorado River of the West and Its Tributaries is John Wesley Powell’s classic 19th-century account of his pioneering scientific and geographic survey of the Colorado River and the Grand Canyon region.
• B. Washburn–Langford–Doane Expedition
  The Washburn–Langford–Doane Expedition was an 1870 exploratory survey of the Yellowstone region whose reports helped lead to the creation of Yellowstone National Park.
• C. Raynolds Expedition to the Yellowstone and Missouri River headwaters
  The Raynolds Expedition to the Yellowstone and Missouri River headwaters was an 1859–1860 U.S. Army topographical survey that produced some of the earliest detailed scientific and geographic information about the northern Rocky Mountains and the Yellowstone region.
• D. Powder River Expedition
  The Powder River Expedition was an 1865 U.S. Army campaign against Plains tribes in present-day Wyoming and Montana, aimed at securing overland travel routes and asserting federal control in the northern Great Plains.
• E. McClure expedition
  The McClure expedition was a mid-19th-century British Arctic voyage led by Robert McClure that is credited with the first traversal of the Northwest Passage, albeit partly by sledge over ice.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: 1871–1872 Colorado River expedition
Target entity description: The 1871–1872 Colorado River expedition was John Wesley Powell’s second major scientific and exploratory journey through the canyons of the Green and Colorado Rivers, aimed at mapping, studying geology, and documenting the region’s Indigenous cultures.

• A. Exploration of the Colorado River of the West and Its Tributaries
  Exploration of the Colorado River of the West and Its Tributaries is John Wesley Powell’s classic 19th-century account of his pioneering scientific and geographic survey of the Colorado River and the Grand Canyon region.
• B. Washburn–Langford–Doane Expedition
  The Washburn–Langford–Doane Expedition was an 1870 exploratory survey of the Yellowstone region whose reports helped lead to the creation of Yellowstone National Park.
• C. Raynolds Expedition to the Yellowstone and Missouri River headwaters
  The Raynolds Expedition to the Yellowstone and Missouri River headwaters was an 1859–1860 U.S. Army topographical survey that produced some of the earliest detailed scientific and geographic information about the northern Rocky Mountains and the Yellowstone region.
• D. Powder River Expedition
  The Powder River Expedition was an 1865 U.S. Army campaign against Plains tribes in present-day Wyoming and Montana, aimed at securing overland travel routes and asserting federal control in the northern Great Plains.
• E. McClure expedition
  The McClure expedition was a mid-19th-century British Arctic voyage led by Robert McClure that is credited with the first traversal of the Northwest Passage, albeit partly by sledge over ice.
• F. None of above. chosen