Question: William Lewis Sublette exploited the riches along a wagon route that is how many miles long?

full_context: Document 1: Fort Bridger: Fort Bridger was originally a 19th-century fur trading outpost established in 1842, on Blacks Fork of the Green River, in what is now Uinta County, Wyoming, United States. It became a vital resupply point for wagon trains on the Oregon Trail, California Trail, and Mormon Trail. The Army established a military post here in 1858 during the Utah War, until it was finally closed in 1890. A small town, Fort Bridger, Wyoming, remains near the fort and takes its name from it.
Document 2: Boonslick: The Boonslick, or Boone's Lick Country, is a cultural region of Missouri along the Missouri River that played an important role in the westward expansion of the United States and the development of Missouri's statehood in the early 19th century. The Boone's Lick Trail, a route paralleling the north bank of the river between St. Charles and Franklin, Missouri, was the primary thoroughfare for settlers moving westward from St. Louis in the early 19th century. Its terminus in Franklin marked the beginning of the Santa Fe Trail, which eventually became a major conduit for Spanish trade in the American Southwest. Later it connected to the large emigrant trails, including the Oregon and California Trails, used by pioneers, gold-seekers and other early settlers of the West. The region takes its name from a salt spring or "lick" in western Howard County, where Nathan and Daniel Morgan Boone, sons of famed frontiersman Daniel Boone, built a homestead in 1807.
Document 3: The Oregon Trail (series): The Oregon Trail is a series of educational computer games that began with the very first edition originally developed by Don Rawitsch, Bill Heinemann, and Paul Dillenberger in 1971 and produced by the Minnesota Educational Computing Consortium (MECC) in 1974. The original game was designed to teach school children about the realities of 19th-century pioneer life on the Oregon Trail. The player assumes the role of a wagon leader guiding a party of settlers from Independence, Missouri, to Oregon's Willamette Valley via a covered wagon in 1848.
Document 4: William Sublette: William Lewis Sublette also spelled Sublett (September 21 1798 - July 23 1845), was a pioneer, frontiersman, trapper, fur trader, explorer, and mountain man, who, with his four brothers, after 1823, became an agent of the Rocky Mountain Fur Company and later, one of its co-owners, exploiting the riches of the Oregon Country, which helped settle and improve the best routes, along the Oregon Trail.
Document 5: Fort Walla Walla–Fort Colville Military Road: The Fort Walla Walla–Fort Colville Military Road was built in June 1859 to connect the Walla Walla area with its fairly easy access to the Columbia River to the mountainous area of the Huckleberry and Selkirk Mountains of current Northeast Washington and the Inland Northwest. Brigadier General William S. Harney, commander of the Department of Oregon, opened up the district north of the Snake River to settlers in 1858 and ordered Brevet Major Pinkney Lugenbeel, 9th Infantry Regiment (United States) to establish a U.S. Army post to restrain the Indians lately hostile to the U.S. Army's Northwest Division and to protect miners who flooded into the area after first reports of gold in the area appeared in Western Washington newspapers in July 1855. It was common practice to use existing Indian trails to develop military roads, and only make necessary improvements for the movement of artillery or supply trains. Brevet Major Lugenbeel followed the long established Indian trail, then Hudson Bay Company brigade trail from the U.S. Fort Walla Walla area to Hudson Bay Company Fort Colvile, but had to leave the trail at current Orin-Rice Road, two miles south of Colville, where the southernmost land claims of the Hudson Bay Company fort began. Washington Territorial Governor Isaac Stevens and the U.S. Army were ordered by the United States Department of State to honor land ownership claims by the Hudson Bay Company. Lugenbeel's command arrived from Fort Walla Walla on June 20, 1859; Pinkney Lugenbeel was later credited with improving and building up the Military Road.
Document 6: Register Cliff: Register Cliff is a sandstone cliff and featured key navigational landmark prominently listed in the 19th century guidebooks about the Oregon Trail, and a place where many emigrants chiseled the names of their families on the soft stones of the cliff it was one of the key checkpoint landmarks for parties heading west along the Platte River valley west of Fort John, Wyoming which allowed travelers to verify they were on the correct path up to South Pass and not moving into impassable mountain terrainsgeographically, it is on the eastern ascent of the Continental divide leading upward out of the great plains in the east of the U.S. state of Wyoming. It is notable as a historic landmark for 'registering' hundreds of emigrants on the Oregon Trail (thus also the other northern Emigrant Trails that split off farther west such as the California Trail and Mormon Trail) who came to follow custom and inscribed their names on its rocks during the western migrations of the 19th century. An estimated 500,000 emigrants used these trails from 1843–1869, with up to one-tenth dying along the way, usually due to disease.
Document 7: The Oregon Trail (video game): The Oregon Trail is a computer game originally developed by Don Rawitsch, Bill Heinemann, and Paul Dillenberger in 1971 and produced by the Minnesota Educational Computing Consortium (MECC) in 1974. The original game was designed to teach school children about the realities of 19th-century pioneer life on the Oregon Trail. The player assumes the role of a wagon leader guiding a party of settlers from Independence, Missouri, to Oregon's Willamette Valley via a covered wagon in 1848.
Document 8: Oregon Trail: The Oregon Trail is a 2170 mi historic east–west, large-wheeled wagon route and emigrant trail in the United States that connected the Missouri River to valleys in Oregon. The eastern part of the Oregon Trail spanned part of the future state of Kansas, and nearly all of what are now the states of Nebraska and Wyoming. The western half of the trail spanned most of the future states of Idaho and Oregon.
Document 9: Meriwether Lewis: Meriwether Lewis (August 18, 1774 – October 11, 1809) was an American explorer, soldier, politician, and public administrator, best known for his role as the leader of the Lewis and Clark Expedition, also known as the Corps of Discovery, with William Clark.
Document 10: Bozeman Trail: The Bozeman Trail was an overland route connecting the gold rush territory of Montana to the Oregon Trail. Its most important period was from 1863–68. Despite its name, "the major part of the route in Wyoming used by all Bozeman Trail travelers in 1864 was pioneered by Allen Hurlbut". Many miles of the Bozeman Trail in present Montana followed the tracks of Bridger Trail, opened by Jim Bridger in 1864. The flow of pioneers and settlers through territory of American Indians provoked their resentment and caused attacks. The challengers to the route were newly arrived Lakotas and their Indian allies, the Arapahoe and the Cheyenne. The United States put emphasis on a right to "establish roads, military and other posts" as described in Article 2 in the Fort Laramie Treaty of 1851. All parties in the conflict had signed that treaty. The Crow Indians held the treaty right to the contested area and had called it their homeland for decades. They sided with the whites. The U.S. Army undertook several military campaigns against the hostile Indians to try to control the trail. Because of its association with frontier history and conflict with American Indians, various segments of the trail are listed on the National Register of Historic Places (NRHP).
Document 11: Fort Ridgely and South Pass Wagon Road: The Fort Ridgely and South Pass Wagon Road (also known as Nobles Trail) was a wagon trail that was intended to connect Fort Ridgely in Minnesota Territory (now Minnesota) with South Pass in the Rocky Mountains of Nebraska Territory (now Wyoming). It was designed to link St. Paul with California via the Oregon Trail, however only a portion of the route was completed. The trail was promoted and supervised by William H. Nobles. Appropriations for the trail were authorized by the U.S. Congress on July 22, 1856. It was the first road built in Dakota Territory.
Document 12: Meek Cutoff: The Meek Cutoff was a covered wagon road that branched off the Oregon Trail in northeastern Oregon. The road is named for frontiersman Stephen Meek, who was hired to lead the first wagon train along it in 1845. The journey was a particularly hard one, and many of the pioneers lost their lives.
Document 13: Louis Vasquez: Pierre Luis Vasquez (October 3, 1798 – September 5, 1868) was a mountain man and trader. He was born and raised at St. Louis, Missouri. Pierre Luis Vasquez was the son of Benito Vasquez and Marie-Julie Papin (daughter of Pierre Papin & Catherine Guichard. Benito was born in Galicia, Spain in 1738 son of Francisco Vasquez and Marie de La Ponte. Many historians write that Pierre Luis was a Mexican-American but he was of French and Spanish (European) descent. In 1823, he became a fur man, receiving his first license to trade with the Pawnee. By the early 1830s he had shifted his operations to the mountains, a popular and active mountain man and trader. Pierre Luis was nicknamed "Old Vaskiss" by other Mountain men. Vasquez became a partner of Andrew Sublette, perhaps in 1834, returned to St. Louis in 1835, and went back to trade on the South Platte that winter and built Fort Vasquez that year after obtaining a trading license in St. Louis, Missouri, from William Clark, the Superintendent of Indian Affairs. He traveled back and forth between the mountains and St. Louis almost yearly, his reputation growing. Unable to turn a profit, they sold Fort Vasquez to Lock and Randolph in 1840 who subsequently went bankrupt and abandoned the structures in 1842. Due to the bankruptcy, Luis Vasquez and Andrew Sublette could not collect the sum owed to them for the sale. Vasquez then became associated with Jim Bridger. By 1843 they had built Fort Bridger on Blacks Fork of the Green River, which became as much an emigrant station as trading post. At St. Louis in 1846 Vasquez married a widow, Mrs. Narcissa Land Ashcraft and took his new family, her son and daughter, to Fort Bridger in Wyoming. Vasquez opened a store at Salt Lake City in 1855. He and Bridger sold their fort in 1858, but Vasquez already had retired to Missouri. He died at his Westport home, and was buried at St. Mary's Church cemetery.
Document 14: Overland Trail: The Overland Trail (also known as the Overland Stage Line) was a stagecoach and wagon trail in the American West during the 19th century. While portions of the route had been used by explorers and trappers since the 1820s, the Overland Trail was most heavily used in the 1860s as an alternative route to the Oregon, California, and Mormon trails through central Wyoming. The Overland Trail was famously used by the Overland Stage Company owned by Ben Holladay to run mail and passengers to Salt Lake City, Utah, via stagecoaches in the early 1860s. Starting from Atchison, Kansas, the trail descended into Colorado before looping back up to southern Wyoming and rejoining the Oregon Trail at Fort Bridger. The stage line operated until 1869 when the completion of the First Transcontinental Railroad eliminated the need for mail service via Thais' stagecoach. Mostly used during the gold rush of 1848.
Document 15: Mullan Road: Mullan Road was the first wagon road to cross the Rocky Mountains to the Inland of the Pacific Northwest. It was built by U.S. Army troops under the command of Lt. John Mullan, between the spring of 1859 and summer 1860. It led from Fort Benton, which at the time was in the Dakota Territory, then Idaho Territory from July 1863, and Montana Territory beginning in May 1864, and the navigational head of the Missouri River (and once farthest inland port in the world). The road connected to Fort Walla Walla, Washington Territory, near the Columbia River. The road previewed the route approximately followed of modern-day Interstate 15 and Interstate 90 through present-day Montana, Idaho, and Washington.
ground_truth: 2170