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168-784: The Big Belts lie primarily between the Missouri River drainage to the west and the Smith River drainage to the east. They are traversed by U.S. Highway 12 between Townsend in the Missouri drainage, and White Sulphur Springs in the upper Smith River drainage. The gulches on the western slopes of the Big Belts were noted historically for rich gold placer strikes. The richest were the 1864 and 1865 placer gold strikes in Confederate Gulch , including Montana Bar, which

336-536: A tributary of the Mississippi, the Missouri River is slightly longer and carries a comparable volume of water. When combined with the lower Mississippi River, it forms the world's fourth-longest river system . For over 12,000 years, people have depended on the Missouri River and its tributaries as a source of sustenance and transportation. More than ten major groups of Native Americans populated

504-663: A broader effort to re-establish a French colonial empire in North America. However, France's failure to suppress a revolt in Saint-Domingue , coupled with the prospect of renewed warfare with the United Kingdom , prompted Napoleon to consider selling Louisiana to the United States. Acquisition of Louisiana was a long-term goal of President Thomas Jefferson , who was especially eager to gain control of

672-569: A debt crisis, Napoleon offered to sell the entirety of Louisiana, including the Missouri River, for $ 15 million – amounting to less than 3¢ per acre. The deal was signed in 1803, doubling the size of the United States with the acquisition of the Louisiana Territory . In 1803, Jefferson instructed Meriwether Lewis to explore the Missouri and search for a water route to the Pacific Ocean. By then, it had been discovered that

840-426: A guardian, investing the money of his ward in purchasing an important adjacent territory; & saying to him when of age, I did this for your good." Jefferson ultimately came to the conclusion before the ratification of the treaty that the purchase was to protect the citizens of the United States therefore making it constitutional. Henry Adams and other historians have argued that Jefferson acted hypocritically with

1008-600: A large endorheic drainage called the Great Divide Basin exists between the Missouri and Green watersheds in western Wyoming. This area is sometimes counted as part of the Missouri River watershed, even though its waters do not flow to either side of the Continental Divide. To the north, the much lower Laurentian Divide separates the Missouri River watershed from those of the Oldman River ,

1176-513: A mix of sovereign bonds and the assumption of French debts. Earlier in 1803, Francis Baring and Company of London had become the U.S. government's official banking agent in London following the failure of Bird, Savage & Bird . Because of this favored position, the U.S. asked Barings to handle the transaction. Barings had a close relationship with Hope & Co. of Amsterdam, and the two banking houses worked together to facilitate and underwrite

1344-464: A pawn for European political intrigue. The colony was the most substantial presence of France's overseas empire , with other possessions consisting of a few small settlements along the Mississippi and other main rivers. France ceded the territory to Spain in 1762 in the secret Treaty of Fontainebleau . Following French defeat in the Seven Years' War , Spain gained control of the territory west of

1512-419: A period of record greater than fifty years is at Hermann, Missouri – 97.9 miles (157.6 km) upstream of the mouth of the Missouri – where the average annual flow was 87,520 cu ft/s (2,478 m /s) from 1897 to 2010. About 522,500 sq mi (1,353,000 km ), or 98.7% of the watershed, lies above Hermann. The highest annual mean was 181,800 cu ft/s (5,150 m /s) in 1993, and

1680-490: A potential invasion from Britain or the U.S. But in early 1803, continuing war between France and Britain seemed unavoidable. On March 11, 1803, Napoleon began planning an invasion of Great Britain . In Saint-Domingue, Leclerc's forces took Louverture prisoner, but their expedition soon faltered in the face of fierce resistance and disease. By early 1803, Napoleon decided to abandon his plans to rebuild France's New World empire. Without sufficient revenues from sugar colonies in

1848-413: A river that plays hide and seek with you today and tomorrow follows you around like a pet dog with a dynamite cracker tied to his tail. That river is the Missouri. With a drainage basin spanning 529,350 square miles (1,371,000 km ), the Missouri River's catchment encompasses nearly one-sixth of the area of the United States or just over five percent of the continent of North America. Comparable to

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2016-623: A special province under the jurisdiction of the Captaincy General of Cuba , while the vast region to the west was in 1803 still considered part of the Commandancy General of the Provincias Internas . Louisiana had never been considered one of New Spain's internal provinces. If the territory included all the tributaries of the Mississippi on its western bank, the northern reaches of the purchase extended into

2184-656: A sum the Americans could not afford and the financers could not provide. In the final agreement, the value of the U.S. currency was set at ⁠5 + 3333 / 10000 ⁠ francs per U.S. dollar. In 2023 dollars, the $ 15 million purchase price is equivalent to about $ 371 million. As part of the deal, the U.S. assumed responsibility for up to 20 million francs ($ 3.75 million) of French debts owed to U.S. citizens. The remaining 60 million francs ($ 11.25 million) were financed through U.S. government bonds carrying 6% interest, redeemable between 1819 and 1822. In October 1803,

2352-546: A treaty. The Louisiana Purchase was the latter, a treaty. Article II, Section 2, of the Constitution specifically grants the president the power to negotiate treaties, which is what Jefferson did. Madison (the "Father of the Constitution") assured Jefferson that the Louisiana Purchase was well within even the strictest interpretation of the Constitution. Treasury Secretary Albert Gallatin added that because

2520-666: A tributary of the South Saskatchewan River , as well as the Souris , Sheyenne , and smaller tributaries of the Red River of the North . All of these streams are part of Canada's Nelson River drainage basin, which empties into Hudson Bay . There are also several large endorheic basins between the Missouri and Nelson watersheds in southern Alberta and Saskatchewan. The Minnesota and Des Moines Rivers, tributaries of

2688-509: A vote to deny the request for the purchase, but it failed by two votes, 59–57. The Federalists even tried to prove the land belonged to Spain, not France, but available records proved otherwise. The Federalists also feared that the power of the Atlantic seaboard states would be threatened by the new citizens in the West, whose political and economic priorities were bound to conflict with those of

2856-419: A whole, the Missouri is thirteenth largest, after the Mississippi, Mackenzie , St. Lawrence, Ohio, Columbia, Niagara, Yukon, Detroit, St. Clair, Fraser , Slave , and Koksoak . As the Missouri drains a predominantly semi-arid region, its discharge is much lower and more variable than other North American rivers of comparable length. Before the construction of dams, the river flooded twice each year – once in

3024-455: Is a stub . You can help Misplaced Pages by expanding it . This Lewis and Clark County , Montana state location article is a stub . You can help Misplaced Pages by expanding it . This Meagher County , Montana state location article is a stub . You can help Misplaced Pages by expanding it . Missouri River The Missouri River is a river in the Central and Mountain West regions of

3192-602: Is joined by the Gallatin a mile (1.6 km) downstream. It then passes through Canyon Ferry Lake , a reservoir west of the Big Belt Mountains . Issuing from the mountains near Cascade , the river flows northeast to the city of Great Falls , where it drops over the Great Falls of the Missouri , a series of five substantial waterfalls. It then winds east through a scenic region of canyons and badlands known as

3360-563: Is measured to the hydrologic source, regardless of naming convention. The main stem of the Kansas River, for example, is 148 miles (238 km) long. However, including the longest headwaters tributaries, the 453-mile (729 km) Republican River and the 156-mile (251 km) Arikaree River , brings the total length to 749 miles (1,205 km). Similar naming issues are encountered with the Platte River, whose longest tributary,

3528-464: Is sparsely populated. However, many northwestern cities, such as Billings, Montana , are among the fastest growing in the Missouri basin. With more than 170,000 square miles (440,000 km ) under the plow, the Missouri River watershed includes roughly one-fourth of all the agricultural land in the United States, providing more than a third of the country's wheat, flax, barley, and oats. However, only 11,000 square miles (28,000 km ) of farmland in

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3696-782: The American Fur Company founded Fort Union at the confluence of the Missouri and Yellowstone Rivers. Fort Union gradually became the main headquarters for the fur trade in the upper Missouri basin. Fur trapping activities in the early 19th century encompassed nearly all of the Rocky Mountains on both the eastern and western slopes. Trappers of the Hudson's Bay Company, St. Louis Missouri Fur Company, American Fur Company, Rocky Mountain Fur Company , North West Company and other outfits worked thousands of streams in

3864-713: The Bighorn , in southern Montana. Although the business started small, it quickly grew into a thriving trade. Lisa's men started construction of Fort Raymond , which sat on a bluff overlooking the confluence of the Yellowstone and Bighorn, in the fall of 1807. The fort would serve primarily as a trading post for bartering with the Native Americans for furs. This method was unlike that of the Pacific Northwest fur trade, which involved trappers hired by

4032-576: The Columbia River system, which drains into the Pacific, had a similar latitude as the headwaters of the Missouri River, and it was widely believed that a connection or short portage existed between the two. However, Spain balked at the takeover, citing that they had never formally returned Louisiana to the French. Spanish authorities warned Lewis not to take the journey and forbade him from seeing

4200-589: The French Republican calendar ) at the Hôtel Tubeuf in Paris. The signers were Robert Livingston , James Monroe , and François Barbé-Marbois . After the signing Livingston famously stated, "We have lived long, but this is the noblest work of our whole lives ... From this day the United States take their place among the powers of the first rank." On July 4, 1803, the treaty was announced, but

4368-543: The Illinoian ) glaciation diverted the Missouri River southeastward toward its present confluence with the Mississippi and caused it to integrate into a single river system that cuts across the regional slope. In western Montana, the Missouri River is thought to have once flowed north then east around the Bear Paw Mountains . Sapphires are found in some spots along the river in western Montana. Advances of

4536-781: The Missouri River ; the Red River Expedition (1806) explored the Red River basin; the Pike Expedition (1806) also started up the Missouri but turned south to explore the Arkansas River watershed. In addition, the Dunbar and Hunter Expedition (1804–1805) explored the Ouachita River watershed. The maps and journals of the explorers helped to define the boundaries during the negotiations leading to

4704-515: The Mound builders , stayed along the Missouri, becoming the ancestors of the later Indigenous peoples of the Great Plains. Indigenous peoples of North America who have lived along the Missouri have historically had access to ample food, water, and shelter. Many migratory animals naturally inhabit the plains area. Before they were hunted by colonists and Native Americans, these animals, such as

4872-713: The Niobrara River and many smaller tributaries from the southwest. It then proceeds to form the boundary of South Dakota and Nebraska and is joined by the James River from the north. At Sioux City the Big Sioux River comes in from the north, after which the Missouri forms the Iowa –Nebraska boundary. It flows south to the city of Omaha where it receives its longest tributary, the Platte River , from

5040-551: The North Platte River , is more than twice as long as its mainstream. The Missouri's headwaters above Three Forks extend much farther upstream than the main stem. Measured to the farthest source at Brower's Spring, the Jefferson River is 298 miles (480 km) long. Thus measured to its highest headwaters, the Missouri River stretches for 2,639 miles (4,247 km). When combined with the lower Mississippi,

5208-544: The Osage and Gasconade Rivers from the south downstream of Jefferson City . The river then rounds the northern side of St. Louis to join the Mississippi River on the border between Missouri and Illinois . There is only one river with a personality, a sense of humor, and a woman's caprice; a river that goes traveling sidewise, that interferes in politics, rearranges geography, and dabbles in real estate;

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5376-589: The Otoe , Missouria , Omaha , Ponca , Dakota , Lakota , Arikara , Hidatsa , Mandan , Assiniboine , Gros Ventres and Blackfeet . In this pre-colonial and early-colonial era, the Missouri river was used as a path of trade and transport, and the river and its tributaries often formed territorial boundaries. Most of the Indigenous peoples in the region at that time had semi-nomadic cultures, with many tribes maintaining different summer and winter camps. However,

5544-495: The Pacific Northwest region, provided a foundation for future explorers and emigrants. They also negotiated relations with numerous Native American tribes and wrote extensive reports on the climate, ecology and geology of the region. Many present-day names of geographic features in the upper Missouri basin originated from their expedition. As early as the 18th century, fur trappers entered the extreme northern basin of

5712-719: The Treaty of Paris , France ceded its Canadian possessions to the British, gaining Louisiana from the Spanish in return. Initially, the Spanish did not extensively explore the Missouri and let French traders continue their activities under license. However, this ended after news of incursions by trappers working for the Hudson's Bay Company in the upper Missouri River watershed was brought back following an expedition by Jacques D'Eglise in

5880-735: The United States . The nation's longest, it rises in the eastern Centennial Mountains of the Bitterroot Range of the Rocky Mountains of southwestern Montana , then flows east and south for 2,341 miles (3,767 km) before entering the Mississippi River north of St. Louis , Missouri . The river drains semi-arid watershed of more than 500,000 square miles (1,300,000 km ), which includes parts of ten U.S. states and two Canadian provinces. Although

6048-418: The buffalo , provided meat, clothing, and other everyday items; there were also great riparian areas in the river's floodplain that provided habitat for herbs and other staple foods. No written records from the tribes and peoples of the pre-European contact period exist because they did not yet use writing. According to the writings of early colonists, some of the major tribes along the Missouri River included

6216-538: The fluvial Arikaree Group were deposited between 29 and 19 million years ago. The Miocene -age Ogallala and the slightly younger Pliocene -age Broadwater Formation deposited atop the Arikaree Group, and are formed from material eroded off of the Rocky Mountains during a time of increased generation of topographic relief; these formations stretch from the Rocky Mountains nearly to the Iowa border and give

6384-726: The headwaters of the Missouri River first rose in the Laramide Orogeny , a mountain-building episode that occurred from around 70 to 45 million years ago (the end of the Mesozoic through the early Cenozoic ). This orogeny uplifted Cretaceous rocks along the western side of the Western Interior Seaway , a vast shallow sea that stretched from the Arctic Ocean to the Gulf of Mexico, and deposited

6552-472: The "April Rise" or " Spring Fresh ", with the melting of snow on the plains of the watershed, and in the "June Rise", caused by snowmelt and summer rainstorms in the Rocky Mountains. The latter was far more destructive, with the river increasing to over ten times its normal discharge in some years. The Missouri's discharge is affected by over 17,000 reservoirs with an aggregate capacity of some 141 million acre-feet (174 km ). By providing flood control,

6720-410: The 18th and early 19th century. During this period, south Louisiana received a large influx of French-speaking refugees fleeing the large slave revolt in Saint-Domingue, including planters who brought their slaves with them. Many Southern slaveholders feared that acquisition of the new territory might inspire American-held slaves to follow the example of those in Saint-Domingue and revolt. They wanted

6888-671: The Adams–Onís Treaty, which set the western boundary as follows: north up the Sabine River from the Gulf of Mexico to its intersection with the 32nd parallel , due north to the Red River , up the Red River to the 100th meridian , north to the Arkansas River , up the Arkansas River to its headwaters, due north to the 42nd parallel and due west to its previous boundary. Governing the Louisiana Territory

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7056-582: The American West and a flood of settlers, farmers, ranchers, adventurers, hopefuls, financially bereft, and entrepreneurs took their place. The river roughly defined the American frontier in the 19th century, particularly downstream from Kansas City, where it takes a sharp eastern turn into the heart of the state of Missouri, an area known as the Boonslick . As first area settled by Europeans along

7224-579: The American right to deposit goods. However, in 1800, Spain had ceded the Louisiana territory back to France as part of Napoleon's secret Third Treaty of San Ildefonso . The subsequent 1801 Treaty of Aranjuez established that Spain's cession of Louisiana was a "restoration" of the territory to France, not a retrocession. The territory nominally remained under Spanish control, until a transfer of power to France on November 30, 1803, just three weeks before

7392-539: The Canadian provinces of Alberta and Saskatchewan . The watershed's largest city is Denver , Colorado, with a population of more than six hundred thousand. Denver is the main city of the Front Range Urban Corridor whose cities had a combined population of over four million in 2005, making it the largest metropolitan area in the Missouri River basin. Other major population centers – mostly in

7560-525: The Caribbean, Louisiana had little value to him. Spain had not yet completed the transfer of Louisiana to France, and war between France and the UK was imminent. Out of anger towards Spain and the unique opportunity to sell something that was useless and not truly his yet, Napoleon decided to sell the entire territory. Although the foreign minister Talleyrand opposed the plan, on April 10, 1803, Napoleon told

7728-400: The French actions and its intention to re-establish an empire in North America, Jefferson declared neutrality in relation to the Caribbean, refusing credit and other assistance to the French, but allowing war contraband to get through to the rebels to prevent France from regaining a foothold. In 1803, Pierre Samuel du Pont de Nemours , a French nobleman, began to help negotiate with France at

7896-508: The French colonial authorities since 1706, when he deserted his post as commandant of Fort Detroit after poorly handling an attack by the Ottawa that resulted in thirty-one deaths. However, his reputation was enhanced in 1720 when the Pawnee – who had earlier been befriended by Bourgmont – massacred the Spanish Villasur expedition near present-day Columbus, Nebraska , on the Missouri River, temporarily ending Spanish encroachment on French Louisiana. Bourgmont established Fort Orleans ,

8064-418: The Great Plains much of their gentle but persistent eastward tilt, and also constitute a major aquifer. Immediately before the Quaternary Ice Age , the Missouri River was likely split into three segments: an upper portion that drained northwards into Hudson Bay, and middle and lower sections that flowed eastward down the regional slope. As the Earth plunged into the Ice Age, a pre-Illinoian (or possibly

8232-419: The Gulf at the confluence of the Arkansas River with the Mississippi. In 1682, France expanded its territorial claims in North America to include land on the western side of the Mississippi River, which included the lower portion of the Missouri. However, the Missouri itself remained formally unexplored until Étienne de Veniard, Sieur de Bourgmont commanded an expedition in 1714 that reached at least as far as

8400-403: The Kansas River and its tributary the Republican River as well as pair of smaller Colorado streams, Big Sandy Creek and the South Platte River , to near Denver. The gold rushes precipitated the decline of the Bozeman Trail as a popular emigration route, as it passed through land held by often-hostile Native Americans. Safer paths were blazed to the Great Salt Lake near Corinne, Utah , during

8568-550: The Louisiana Purchase was primarily economic self-interest, not any legitimate concern over constitutionality or whether France indeed owned Louisiana or was required to sell it back to Spain should it desire to dispose of the territory. The Northerners were not enthusiastic about Western farmers gaining another outlet for their crops that did not require the use of New England ports. Also, many Federalists were speculators in lands in upstate New York and New England and were hoping to sell these lands to farmers, who might go west instead if

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8736-502: The Louisiana Purchase went through. They also feared that this would lead to Western states being formed, which would likely be Republican, and dilute the political power of New England Federalists. Another concern was whether it was proper to grant citizenship to the French, Spanish, and free black people living in New Orleans, as the treaty would dictate. Critics in Congress worried whether these "foreigners", unacquainted with democracy, could or should become citizens. Spain protested

8904-512: The Louisiana Purchase, because of his position as a strict constructionist regarding the Constitution, by stretching the intent of that document to justify his purchase. The American purchase of the Louisiana territory was not accomplished without domestic opposition. Jefferson's philosophical consistency was in question and many people believed he and others, including James Madison, were doing something they surely would have argued against with Alexander Hamilton . The Federalists strongly opposed

9072-403: The Louisiana Purchase. The Louisiana Purchase extended United States sovereignty across the Mississippi River, nearly doubling the nominal size of the country. The purchase included land from fifteen present U.S. states and two Canadian provinces , including the entirety of Arkansas , Missouri , Iowa , Oklahoma , Kansas , and Nebraska ; large portions of North Dakota and South Dakota ;

9240-424: The Louisiana Territory contributed to the American Civil War a half century later. As states organized within the territory, the status of slavery in each state became a matter of contention in Congress, as southern states wanted slavery extended to the west, and northern states just as strongly opposed new states being admitted as " slave states ". The Missouri Compromise of 1820 was a temporary solution. After

9408-404: The Louisiana Territory led to debates over the idea of indigenous land rights that persisted into the mid 20th century. The many court cases and tribal suits in the 1930s for historical damages flowing from the Louisiana Purchase led to the Indian Claims Commission Act (ICCA) in 1946. Felix S. Cohen , Interior Department lawyer who helped pass ICCA, is often quoted as saying, "practically all of

9576-400: The Louisiana purchase was the Mississippi River, from its source to the 31st parallel , though the source of the Mississippi was, at the time, unknown. The eastern boundary below the 31st parallel was unclear. The U.S. claimed the land as far as the Perdido River , and Spain claimed that the border of its Florida Colony remained the Mississippi River. The Adams–Onís Treaty with Spain resolved

9744-461: The MacKay and Evans map of the Missouri, although Lewis eventually managed to gain access to it. Meriwether Lewis and William Clark began their famed expedition in 1804 with a party of thirty-three people in three boats. Although they became the first Europeans to travel the entire length of the Missouri and reach the Pacific Ocean via the Columbia, they found no trace of the Northwest Passage. The maps made by Lewis and Clark, especially those of

9912-414: The Mississippi , and the British received the territory to the east of the river. Following the establishment of the United States, the Americans controlled the area east of the Mississippi and north of New Orleans. The main issue for the Americans was free transit of the Mississippi out to sea. As the lands were being gradually settled by American migrants, many Americans, including Jefferson, assumed that

10080-407: The Missouri Breaks, receiving the Marias River from the west then widening into the Fort Peck Lake reservoir a few miles above the confluence with the Musselshell River . Farther on, the river passes through the Fort Peck Dam , and immediately downstream, the Milk River joins from the north. Flowing eastward through the plains of eastern Montana, the Missouri receives the Poplar River from

10248-766: The Missouri River in the hopes of finding populations of beaver and river otter , the sale of whose pelts drove the thriving North American fur trade . They came from many different places – some from the Canadian fur corporations at Hudson Bay, some from the Pacific Northwest ( see also : Maritime fur trade ), and some from the midwestern United States. Most did not stay in the area for long, as they failed to find significant resources. The first glowing reports of country rich with thousands of game animals came in 1806 when Meriwether Lewis and William Clark returned from their two-year expedition. Their journals described lands amply stocked with thousands of buffalo, beaver, and river otter; and also an abundant population of sea otters on

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10416-405: The Missouri River in western present-day Missouri and Fort Madison along the Upper Mississippi River in eastern present-day Iowa. With tensions increasing with Great Britain, in 1809 Fort Bellefontaine was converted to a U.S. military fort and was used for that purpose until 1826. During the War of 1812 , aided by their Indian allies, the British defeated U.S. forces in the Upper Mississippi;

10584-426: The Missouri River, with most of the larger ones coming in as the river draws close to the mouth. Most rivers and streams in the Missouri River basin flow from west to east, following the incline of the Great Plains; however, some eastern tributaries such as the James, Big Sioux and Grand River systems flow from north to south. The Missouri's largest tributaries by runoff are the Yellowstone in Montana and Wyoming,

10752-449: The Missouri and its headwaters form part of the fourth-longest river system in the world , at 3,745 miles (6,027 km). By discharge , the Missouri is the ninth largest river of the United States, after the Mississippi, St. Lawrence , Ohio , Columbia, Niagara , Yukon , Detroit , and St. Clair . The latter two, however, are sometimes considered part of a strait between Lake Huron and Lake Erie . Among rivers of North America as

10920-595: The Missouri flowed in a new course along the south side of the Bearpaws, and the lower part of the Milk River tributary took over the original main channel. The Missouri's nickname, the "Big Muddy", was inspired by its enormous loads of sediment or silt – some of the largest of any North American river. In its pre-development state, the river transported some 175 to 320 million short tons (159 to 290 million metric tons) per year. The construction of dams and levees has drastically reduced this to 20 to 25 million short tons (18 to 23 million metric tons) in

11088-399: The Missouri to start. As the 1830s drew to a close, the fur industry slowly began to die as silk replaced beaver fur as a desirable clothing item. By this time, also, the beaver population of streams in the Rocky Mountains had been decimated by intense hunting. Furthermore, frequent Native American attacks on trading posts made it dangerous for employees of the fur companies. In some regions,

11256-418: The Missouri watershed as well as the neighboring Columbia, Colorado, Arkansas, and Saskatchewan river systems. During this period, the trappers, also called mountain men , blazed trails through the wilderness that would later form the paths pioneers and settlers would travel by into the West. Transport of the thousands of beaver pelts required ships, providing one of the first large motives for river transport on

11424-404: The Pacific Northwest coast. In 1807, explorer Manuel Lisa organized an expedition which would lead to the explosive growth of the fur trade in the upper Missouri River country. Lisa and his crew traveled up the Missouri and Yellowstone Rivers, trading manufactured items in return for furs from local Native American tribes, and established a fort at the confluence of the Yellowstone and a tributary,

11592-401: The Pacific Ocean. In late June, Jolliet and Marquette became the first documented European discoverers of the Missouri River, which according to their journals was in full flood. "I never saw anything more terrific," Jolliet wrote, "a tangle of entire trees from the mouth of the Pekistanoui [Missouri] with such impetuosity that one could not attempt to cross it without great danger. The commotion

11760-399: The Platte and Yellowstone Rivers. Elevations in the watershed vary widely, ranging from just over 400 feet (120 m) at the Missouri's mouth to the 14,293-foot (4,357 m) summit of Mount Lincoln in central Colorado. The river drops 8,626 feet (2,629 m) from Brower's Spring, the farthest source. Although the plains of the watershed have extremely little local vertical relief,

11928-417: The Platte in Wyoming, Colorado, and Nebraska, and the Kansas – Republican / Smoky Hill and Osage in Kansas and Missouri. Each of these tributaries drains an area greater than 50,000 square miles (130,000 km ) or has an average discharge greater than 5,000 cu ft/s (140 m /s). The Yellowstone River has the highest discharge, even though the Platte is longer and drains a larger area. In fact,

12096-536: The Platte provided an abundant and reliable source of water for the pioneers as they headed west. Covered wagons, popularly referred to as prairie schooners , provided the primary means of transport until the beginning of regular boat service on the river in the 1850s. During the 1860s, gold strikes in Montana, Colorado, Wyoming, and northern Utah attracted another wave of hopefuls to the region. Although some freight

12264-649: The Rockies in Montana, Idaho and western Wyoming. The Columbia, Missouri and Colorado River watersheds meet at Three Waters Mountain in Wyoming's Wind River Range . South of there, the Missouri basin is bordered on the west by the drainage of the Green River , a tributary of the Colorado, then on the south by the mainstem of the Colorado. Both the Colorado and Columbia Rivers flow to the Pacific Ocean. However,

12432-639: The Rockies provide the majority of the flow in the Missouri and its tributaries. The Missouri and many of its tributaries cross the Great Plains, flowing over or cutting into the Ogallala Group and older mid-Cenozoic sedimentary rocks. The lowest major Cenozoic unit, the White River Formation , was deposited between roughly 35 and 29 million years ago and consists of claystone , sandstone , limestone , and conglomerate . Channel sandstones and finer-grained overbank deposits of

12600-419: The Rocky Mountains in Wyoming and Colorado eastward through the Great Plains. An early expedition led by Robert Stuart from 1812 to 1813 proved the Platte impossible to navigate by the dugout canoes they used, let alone the large sidewheelers and sternwheelers that would later ply the Missouri in increasing numbers. One explorer remarked that the Platte was "too thick to drink, too thin to plow". Nevertheless,

12768-505: The Spanish government had ordered Louisiana to be transferred in October 1802 despite knowing for months that Britain had not recognized the King of Etruria in the Treaty of Amiens . Madison, in response to Spain's objections, noted that the United States had first approached Spain about purchasing the property, but had been told by Spain itself that the U.S. would have to deal with France for

12936-598: The Spanish prime minister had authorized the U.S. to negotiate with the French government regarding "the acquisition of territories which may suit their interests." Spain turned the territory over to France in a ceremony in New Orleans on November 30, a month before France turned the city over to American officials. Other historians counter the above arguments regarding Jefferson's alleged hypocrisy by asserting that countries change their borders in two ways: (1) conquest, or (2) an agreement between nations, otherwise known as

13104-650: The Treasury Minister François Barbé-Marbois that he was considering selling the Louisiana Territory to the United States. On April 11, 1803, just days before Monroe's arrival, Barbé-Marbois offered Livingston all of Louisiana for $ 15 million, which averages to less than three cents per acre (7¢/ha). The total of $ 15 million is equivalent to about $ 371 million in 2023 dollars, or 70 cents per acre. The American representatives were prepared to pay up to $ 10 million for New Orleans and its environs but were dumbfounded when

13272-498: The U.S. Treasury had some $ 5.86 million in specie on hand, $ 2 million of which would be used to pay a portion of the debts assumed from France as part of the purchase. Because Napoleon wanted to receive his money as quickly as possible, Barings and Hopes purchased the bonds for 52 million francs, agreeing to an initial 6 million franc payment upon issuance of the bonds followed by 23 monthly payments of 2 million francs each. The first group of bonds were issued on January 16, 1804, but

13440-892: The U.S. abandoned Forts Osage and Madison, as well as several other U.S. forts built during the war, including Fort Johnson and Fort Shelby . U.S. ownership of the whole Louisiana Purchase region was confirmed in the Treaty of Ghent (ratified in February 1815). The U.S. later built or expanded forts along the Mississippi and Missouri rivers, including adding to Fort Bellefontaine, and constructing Fort Armstrong (1816) and Fort Edwards (1816) in Illinois, Fort Crawford (1816) in Wisconsin, Fort Snelling (1819) in Minnesota, and Fort Atkinson (1819) in Nebraska. The Louisiana Purchase

13608-439: The U.S. government to establish laws allowing slavery in the newly acquired territory so they could be supported in taking their slaves there to undertake new agricultural enterprises, as well as to reduce the threat of future slave rebellions. The Louisiana Territory was broken into smaller portions for administration, and the territories passed slavery laws similar to those in the southern states but incorporating provisions from

13776-419: The United States during the 19th century. The growth of the fur trade in the early 19th century laid much of the groundwork as trappers explored the region and blazed trails. Pioneers headed west en masse beginning in the 1830s, first by covered wagon , then by the growing numbers of steamboats that entered service on the river. Conflict between settlers and Native Americans in the watershed led to some of

13944-434: The United States regarding the extent of Louisiana. The territory's boundaries had not been defined in the 1762 Treaty of Fontainebleau that ceded it from France to Spain, nor in the 1801 Third Treaty of San Ildefonso ceding it back to France, nor the 1803 Louisiana Purchase agreement ceding it to the United States. The U.S. claimed that Louisiana included the entire western portion of the Mississippi River drainage basin to

14112-575: The Western Hemisphere. In 1804, Haiti declared its independence; but fearing a slave revolt at home, Jefferson and the rest of Congress refused to recognize the new republic, the second in the Western Hemisphere, and imposed a trade embargo against it. This, together with the successful French demand for an indemnity of 150 million francs in 1825, severely hampered Haiti's ability to repair its economy after decades of war. After Monroe and Livingston had returned from France with news of

14280-531: The Yellowstone River, which was called Roche Jaune ("Yellow Rock") by the French. Although MacKay and Evans failed to accomplish their original goal of reaching the Pacific, they did create the first accurate map of the upper Missouri River. In 1795, the young United States and Spain signed Pinckney's Treaty , which recognized American rights to navigate the Mississippi River and store goods for export in New Orleans. Three years later, Spain revoked

14448-462: The Yellowstone's flow is about 13,800 cu ft/s (390 m /s) – accounting for sixteen percent of total runoff in the Missouri basin and nearly double that of the Platte. On the other end of the scale is the tiny Roe River in Montana, which at 201 feet (61 m) long is one of the world's shortest rivers. The table on the right lists the ten longest tributaries of the Missouri, along with their respective catchment areas and flows. Length

14616-744: The adjacent Little Belt Mountains. A particularly well-known example of exposed Belt Group mudstones in alternating purplish-red or pale bluish-green layers in the Big Belt Mountains is in Wolf Creek Canyon along Interstate 15 between Helena and Great Falls . While these rocks were named after these ranges of western-central Montana, and are found in them, they are more exposed and better known in northwestern Montana, northern Idaho , and southeastern British Columbia , namely around Flathead Lake and Glacier National Park . This Broadwater County , Montana state location article

14784-409: The annual flow of the Mississippi past St. Louis, and as much as 70 percent in certain droughts. In 1990, the Missouri River watershed was home to about 12 million people. This included the entire population of the U.S. state of Nebraska, parts of the U.S. states of Colorado, Iowa, Kansas, Minnesota, Missouri, Montana, North Dakota, South Dakota, and Wyoming, and small southern portions of

14952-523: The area of Montana , Wyoming , and Colorado east of the Continental Divide ; the portion of Minnesota west of the Mississippi River; the northeastern section of New Mexico ; northern portions of Texas ; New Orleans and the portions of the present state of Louisiana west of the Mississippi River; and small portions of land within Alberta and Saskatchewan . At the time of the purchase,

15120-468: The banks had already provided a 10 million franc advance to France in July 1803. In need of funds, Napoleon pressed the banks to complete their purchase of the bonds as quickly as possible, and by April 1804 the banks transferred an additional 40.35 million francs to fully discharge their obligations to France. In the end, Barings and Hopes acquired the $ 11.25 million in bonds for just $ 9.44 million. The last of

15288-431: The basin is irrigated. A further 281,000 square miles (730,000 km ) of the basin is devoted to the raising of livestock, mainly cattle. Forested areas of the watershed, mostly second-growth , total about 43,700 square miles (113,000 km ). Urban areas, on the other hand, comprise less than 13,000 square miles (34,000 km ) of land. Most built-up areas are along the main stem and a few major tributaries, including

15456-456: The basin relied heavily on the bison as a food source, and their hides and bones served to create other household items. In time, the species came to benefit from the indigenous peoples' periodic controlled burnings of the grasslands surrounding the Missouri to clear out old and dead growth. The large bison population of the region gave rise to the term great bison belt , an area of rich annual grasslands that extended from Alaska to Mexico along

15624-410: The basin. As one of the continent's most significant river systems, the Missouri's drainage basin borders on many other major watersheds of the United States and Canada. The Continental Divide , running along the spine of the Rocky Mountains, forms most of the western border of the Missouri watershed. The Clark Fork and Snake River , both part of the Columbia River basin, drain the area west of

15792-659: The bonds were paid off by the United States Treasury in 1823; with interest, the total cost of the Louisiana Purchase bonds amounted to $ 23,313,567.73. Although the War of the Third Coalition , which brought France into a war with the United Kingdom, began before the purchase was completed, the British government initially allowed the deal to proceed as it was better for the neutral Americans to own

15960-704: The capital of North Dakota, where the Heart River joins from the west. It slows into the Lake Oahe reservoir just before the Cannonball River confluence. While it continues south, eventually reaching Oahe Dam in South Dakota , the Grand , Moreau and Cheyenne Rivers all join the Missouri from the west. The Missouri makes a bend to the southeast as it winds through the Great Plains, receiving

16128-585: The center of Native American wealth and trade lay along the Missouri River in the Dakotas region on its great bend south. A large cluster of walled Mandan, Hidatsa and Arikara villages situated on bluffs and islands of the river was home to thousands, and later served as a market and trading post used by early French and British explorers and fur traders. Following the introduction of horses to Missouri River tribes, possibly from feral European-introduced populations, Natives' way of life changed dramatically. The use of

16296-401: The chiefs back to North America. Fort Orleans was either abandoned or its small contingent massacred by Native Americans in 1726. The French and Indian War erupted when territorial disputes between France and Great Britain in North America reached a head in 1754. By 1763, France's army in North America had been defeated by a combined British-American force and was forced to sue for peace. In

16464-447: The colony, which had become essentially autonomous under Louverture. Louverture, as a French general, had fended off incursions from other European powers, but had also begun to consolidate power for himself on the island. Before the revolution, France had derived enormous wealth from Saint-Domingue at the cost of the lives and freedom of the enslaved. Napoleon wanted the territory's revenues and productivity for France restored. Alarmed over

16632-462: The continental ice sheets diverted the river and its tributaries, causing them to pool up into large temporary lakes such as Glacial Lakes Great Falls , Musselshell and others. As the lakes rose, the water in them often spilled across adjacent local drainage divides, creating now-abandoned channels and coulees including the Shonkin Sag , 100 miles (160 km) long. When the glaciers retreated,

16800-550: The crest of the Rocky Mountains and land extending to the Rio Grande and West Florida . Spain insisted that Louisiana comprised no more than the western bank of the Mississippi River and the cities of New Orleans and St. Louis. The dispute was ultimately resolved by the Adams–Onís Treaty of 1819, with the United States gaining most of what it had claimed in the west. The relatively narrow Louisiana of New Spain had been

16968-524: The crucial Mississippi River port of New Orleans . Jefferson tasked James Monroe and Robert R. Livingston with purchasing New Orleans. Negotiating with French Treasury Minister François Barbé-Marbois , the U.S. representatives quickly agreed to purchase the entire territory of Louisiana after it was offered. Overcoming the opposition of the Federalist Party , Jefferson and Secretary of State James Madison persuaded Congress to ratify and fund

17136-602: The documents did not arrive in Washington, D.C. until July 14. The Louisiana Territory was vast, stretching from the Gulf of Mexico in the south to Rupert's Land in the north, and from the Mississippi River in the east to the Rocky Mountains in the west. Acquiring the territory nearly doubled the size of the United States. In November 1803, France withdrew its 7,000 surviving troops from Saint-Domingue (more than two-thirds of its troops died there) and gave up its ambitions in

17304-544: The early 1790s. In 1795 the Spanish chartered the Company of Discoverers and Explorers of the Missouri, popularly referred to as the "Missouri Company", and offered a reward for the first person to reach the Pacific Ocean via the Missouri. In 1794 and 1795 expeditions led by Jean-Baptiste Truteau and Antoine Simon Lecuyer de la Jonchšre did not even make it as far north as the Mandan villages in central North Dakota. Arguably

17472-589: The early explorations, the U.S. government sought to establish control of the region, since trade along the Mississippi and Missouri rivers was still dominated by British and French traders from Canada and allied Indians, especially the Sauk and Fox . The U.S. adapted the former Spanish facility at Fort Bellefontaine as a fur trading post near St. Louis in 1804 for business with the Sauk and Fox. In 1808, two military forts with trading factories were built, Fort Osage along

17640-430: The eastern flank of the Continental Divide. However, after the arrival of Europeans in North America, both the bison and the Native Americans saw a rapid decline in population. Massive over-hunting for sport by colonists eliminated bison populations east of the Mississippi River by 1833 and reduced the numbers in the Missouri basin to a mere few hundred. Foreign diseases brought by settlers, such as smallpox , raged across

17808-486: The eastern terminus of the First transcontinental railroad via a ferry ride across the Missouri between Council Bluffs, Iowa , and Omaha. The Hannibal Bridge became the first bridge to cross the Missouri River in 1869, and its location was a major reason why Kansas City became the largest city on the river upstream from its mouth at St. Louis. True to the then-ideal of Manifest Destiny , over 500,000 people set out from

17976-651: The end of the Pleistocene . During the end of the last glacial period , large migration of humans were taking place, such as those via the Bering land bridge between the Americas and Eurasia. Over centuries, the Missouri River formed one of these main migration paths. Most migratory groups that passed through the area eventually settled in the Ohio Valley and the lower Mississippi River Valley, but many, including

18144-647: The equally ill-defined British possession— Rupert's Land of British North America , now part of Canada. The purchase originally extended just beyond the 50th parallel . However, the territory north of the 49th parallel (including the Milk River and Poplar River watersheds) was ceded to the UK in exchange for parts of the Red River Basin south of 49th parallel in the Anglo-American Convention of 1818 . The eastern boundary of

18312-423: The first European settlement of any kind on the Missouri River, near present-day Brunswick, Missouri , in 1723. The following year Bourgmont led an expedition to enlist Comanche support against the Spanish, who continued to show interest in taking over the Missouri. In 1725 Bourgmont brought the chiefs of several Missouri River tribes to visit France. There he was raised to the rank of nobility and did not accompany

18480-636: The formal cession of the territory to the United States on December 20, 1803. While the treaty between Spain and France went largely unnoticed in 1800, fear of an eventual French invasion spread across America when, in 1801, Napoleon sent a military force to nearby Saint-Domingue . Though Jefferson urged moderation, Federalists sought to use this against Jefferson and called for hostilities against France. Undercutting them, Jefferson threatened an alliance with Britain, although relations were uneasy in that direction. In 1801, Jefferson supported France in its plan to take back Saint-Domingue (present-day Haiti ), which

18648-476: The gold rush period, which led to the large-scale settlement of the Rocky Mountains region and eastern Great Basin . Louisiana Purchase The Louisiana Purchase ( French : Vente de la Louisiane , lit.   'Sale of Louisiana') was the acquisition of the territory of Louisiana by the United States from the French First Republic in 1803. This consisted of most of

18816-525: The horse allowed them to travel greater distances, and thus facilitated hunting, communications, warfare, the Siouxoan genocide and expulsion of many tribes,and the abundance of trade. Once, tens of millions of American bison (commonly called buffalo), one of the keystone species of the Great Plains and the Ohio Valley, roamed the plains of the Missouri River basin. Most Native American nations in

18984-477: The industry continued well into the 1840s, but in others such as the Platte River valley, declines of the beaver population contributed to an earlier demise. The fur trade finally disappeared in the Great Plains around 1850, with the primary center of industry shifting to the Mississippi Valley and central Canada. Despite the demise of the once-prosperous trade, however, its legacy led to the opening of

19152-582: The issue upon ratification in 1821. Today, the 31st parallel is the northern boundary of the western half of the Florida Panhandle , and the Perdido is the western boundary of Florida. Because the western boundary was contested at the time of the purchase, President Jefferson immediately began to organize four missions to explore and map the new territory. All four started from the Mississippi River. The Lewis and Clark Expedition (1804) traveled up

19320-515: The land in the Mississippi River's drainage basin west of the river. In return for fifteen million dollars, or approximately eighteen dollars per square mile, the United States nominally acquired a total of 828,000 sq mi (2,140,000 km ; 530,000,000 acres) now in the Central United States . However, France only controlled a small fraction of this area, most of which was inhabited by Native Americans ; effectively, for

19488-452: The land rises about 10 feet per mile (1.9 m/km) from east to west. The elevation is less than 500 feet (150 m) at the eastern border of the watershed, but is over 3,000 feet (910 m) above sea level in many places at the base of the Rockies. The Missouri's drainage basin has highly variable weather and rainfall patterns, Overall, the watershed is defined by a continental climate with warm, wet summers and harsh, cold winters. Most of

19656-561: The land, decimating Native American populations. Left without their primary source of sustenance, many of the remaining indigenous people were forced onto resettlement areas and reservations, often at gunpoint. In May 1673, the French-Canadian explorer Louis Jolliet and the French explorer Jacques Marquette left the settlement of St. Ignace on Lake Huron and traveled down the Wisconsin and Mississippi Rivers, aiming to reach

19824-679: The lower Missouri valley is now a populous and highly productive agricultural and industrial region, heavy development has taken its toll on wildlife and fish populations as well as water quality. From the Rocky Mountains, three streams rise to form the headwaters of the Missouri River: The Missouri River officially starts at the confluence of the Jefferson and Madison in Missouri Headwaters State Park near Three Forks, Montana , and

19992-430: The lowest was 41,690 cu ft/s (1,181 m /s) in 2006. Extremes of the flow vary even further. The largest discharge ever recorded was over 750,000 cu ft/s (21,000 m /s) on July 31, 1993, during a historic flood . The lowest, a mere 602 cu ft/s (17.0 m /s) – caused by the formation of an ice dam – was measured on December 23, 1963. The Rocky Mountains of southwestern Montana at

20160-674: The majority of the area, the United States bought the preemptive right to obtain Indian lands by treaty or by conquest, to the exclusion of other colonial powers. The Kingdom of France had controlled the Louisiana territory from 1682 until it was ceded to Spain in 1762. In 1800, Napoleon Bonaparte , the First Consul of the French Republic , regained ownership of Louisiana in exchange for territories in Tuscany as part of

20328-409: The merchants and bankers of New England . There was also concern that an increase in the number of slave-holding states created out of the new territory would exacerbate divisions between North and South. A group of Northern Federalists led by Senator Timothy Pickering of Massachusetts went so far as to explore the idea of a separate northern confederacy. The opposition of New England Federalists to

20496-546: The most longstanding and violent of the American Indian Wars . During the 20th century, the Missouri River basin was extensively developed for irrigation, flood control, and the generation of hydroelectric power . Fifteen dams impound the main stem of the river, with hundreds more on tributaries. Meanders have been cut off and the river channelized to improve navigation, reducing its length by almost 200 miles (320 km) from pre-development times. Although

20664-534: The most successful of the Missouri Company expeditions was that of James MacKay and John Evans . The two set out along the Missouri, and established Fort Charles about 20 miles (32 km) south of present-day Sioux City as a winter camp in 1795. At the Mandan villages in North Dakota, they forcefully expelled several British traders, and while talking to the populace they pinpointed the location of

20832-436: The mouth of the Platte River. It is unclear exactly how far Bourgmont traveled beyond there; he described the blond-haired Mandans in his journals, so it is likely he reached as far as their villages in present-day North Dakota. Later that year, Bourgmont published The Route To Be Taken To Ascend The Missouri River , the first known document to use the name "Missouri River"; many of the names he gave to tributaries, mostly from

21000-442: The mouth, is 21,920 cu ft/s (621 m /s). This is from a drainage area of 186,400 sq mi (483,000 km ), or 35% of the total river basin. At Kansas City, 366.1 miles (589.2 km) from the mouth, the river's average flow is 55,400 cu ft/s (1,570 m /s). The river here drains about 484,100 sq mi (1,254,000 km ), representing about 91% of the entire basin. The lowermost gage with

21168-505: The native tribes that lived along them, are still in use today. The expedition's discoveries eventually found their way to cartographer Guillaume Delisle , who used the information to create a map of the lower Missouri. In 1718, Jean-Baptiste Le Moyne, Sieur de Bienville requested that the French government bestow upon Bourgmont the Cross of St. Louis because of his "outstanding service to France". Bourgmont had in fact been in trouble with

21336-543: The north before crossing into North Dakota where the Yellowstone River , its greatest tributary by volume, joins from the southwest. At the confluence, the Yellowstone is actually the larger river. The Missouri then meanders east past Williston and into Lake Sakakawea , the reservoir formed by Garrison Dam . Below the dam the Missouri receives the Knife River from the west and flows south to Bismarck ,

21504-526: The one which produced the 1972 Black Hills flood through Rapid City, South Dakota . Winter temperatures in the northern and western portions of the basin typically drop to −20 °F (−28.9 °C) or lower every winter with extremes as low as −60 °F (−51.1 °C), while summer highs occasionally exceed 100 °F (37.8 °C) in all areas except the higher elevations of Montana, Wyoming and Colorado. Extreme maxima — almost all prior to 1960 — have exceeded 115 °F (46.1 °C) in all US states in

21672-458: The port to store goods for export. The treaty also recognized American rights to navigate the entire Mississippi, which had become vital to the growing trade of the western territories. In 1798, Spain revoked the treaty allowing American use of New Orleans, greatly upsetting Americans. In 1801, Spanish Governor Don Juan Manuel de Salcedo took over from the Marquess of Casa Calvo , and restored

21840-410: The power to negotiate treaties was specifically granted to the president, the only way extending the country's territory by treaty could not be a presidential power would be if it were specifically excluded by the Constitution (which it was not). Jefferson, as a strict constructionist, was right to be concerned about staying within the bounds of the Constitution, but felt the power of these arguments and

22008-544: The preceding French and Spanish rule (for instance, Spain had prohibited slavery of Native Americans in 1769, but some slaves of mixed African–Native American descent were still being held in St. Louis in Upper Louisiana when the U.S. took over). In a freedom suit that went from Missouri to the U.S. Supreme Court , slavery of Native Americans was finally ended in 1836. The institutionalization of slavery under U.S. law in

22176-467: The present day. Much of this sediment is derived from the river's floodplain , also called the meander belt; every time the river changed course, it would erode tons of soil and rocks from its banks. However, damming and channeling the river has kept it from reaching its natural sediment sources along most of its course. Reservoirs along the Missouri trap roughly 36.4 million short tons (33.0 million metric tons) of sediment each year. Despite this,

22344-406: The purchase, an official announcement of the purchase was made on July 4, 1803. This gave Jefferson and his cabinet until October, when the treaty had to be ratified, to discuss the constitutionality of the purchase. Jefferson considered a constitutional amendment to justify the purchase; however, his cabinet convinced him otherwise. Jefferson justified the purchase by rationalizing, "it is the case of

22512-470: The purchase, because of the cost involved, their belief that France would not have been able to resist U.S. and British encroachment into Louisiana, and Jefferson's perceived hypocrisy. Both Federalists and Jeffersonians were concerned over the purchase's constitutionality. Many members of the House of Representatives opposed the purchase. Majority Leader John Randolph led the opposition. The House called for

22680-493: The purchase. Hopes brought to the transaction experience with issuing sovereign bonds and Barings brought its American connections. Francis Baring 's son Alexander and Pierre Labouchère from Hopes arrived in Paris in April 1803 to assist with the negotiations. With the bankers' help, the French and American negotiators settled on a price of 80 million francs ($ 15 million), down from an initial price of 100 million francs,

22848-417: The real estate acquired by the United States since 1776 was purchased not from Napoleon or any other emperor or czar but from its original Indian owners". More recently, the total cost to the U.S. government of all subsequent treaties and financial settlements up to the year 2012 for the land acquired in the Louisiana Purchase has been estimated to be around $ 2.6 billion, or $ 11.2 billion in 2023 dollars. This

23016-673: The request of Jefferson. Du Pont was living in the United States at the time and had close ties to Jefferson as well as the prominent politicians in France. He engaged in back-channel diplomacy with Napoleon on Jefferson's behalf during a visit to France and originated the idea of the much larger Louisiana Purchase as a way to defuse potential conflict between the United States and Napoleon over North America. Throughout this time, Jefferson had up-to-date intelligence on Napoleon's military activities and intentions in North America. Part of his evolving strategy involved giving du Pont some information that

23184-424: The reservoirs dramatically reduce peak flows and increase low flows. Evaporation from reservoirs significantly reduces the river's runoff, causing an annual loss of over 3 million acre-feet (3.7 km ) from mainstem reservoirs alone. The United States Geological Survey operates fifty-one stream gauges along the Missouri River. The river's average discharge at Bismarck, 1,314.5 miles (2,115.5 km) from

23352-577: The river it was largely populated by slave-owning southerners following the Boone's Lick Road . The major trails for the opening of the American West all have their starting points on the river, including the California , Mormon , Oregon , and Santa Fe trails. The first westward leg of the Pony Express was a ferry across the Missouri at St. Joseph, Missouri . Similarly, most emigrants arrived at

23520-493: The river still transports more than half the total silt that empties into the Gulf of Mexico; the Mississippi River Delta , formed by sediment deposits at the mouth of the Mississippi, constitutes a majority of sediments carried by the Missouri. Archaeological evidence, especially in Missouri, suggests that human beings first inhabited the watershed of the Missouri River between 10,000 and 12,000 years ago at

23688-498: The river town of Independence, Missouri , to their various destinations in the American West from the 1830s to the 1860s. These people had many reasons to embark on this strenuous year-long journey – economic crisis, and later gold strikes including the California Gold Rush , for example. For most, the route took them up the Missouri to Omaha, Nebraska, where they would set out along the Platte River , which flows from

23856-453: The sediments that now underlie much of the drainage basin of the Missouri River. This Laramide uplift caused the sea to retreat and laid the framework for a vast drainage system of rivers flowing from the Rocky and Appalachian Mountains , the predecessor of the modern-day Mississippi watershed. The Laramide Orogeny is essential to modern Missouri River hydrology , as snow and ice melt from

24024-551: The size of the Canadian province of Quebec , the watershed encompasses most of the central Great Plains, stretching from the Rocky Mountains in the west to the Mississippi River Valley in the east and from the southern extreme of western Canada to the border of the Arkansas River watershed. Compared with the Mississippi River above their confluence, the Missouri is twice as long and drains an area three times as large. The Missouri accounts for 45 percent of

24192-727: The state of Louisiana) and the District of Louisiana , which was temporarily under control of the governor and judicial system of the Indiana Territory . The following year, the District of Louisiana was renamed the Territory of Louisiana . New Orleans was the administrative capital of the Orleans Territory, and St. Louis was the capital of the Louisiana Territory. To pay for the land, the American government used

24360-409: The territory of Louisiana's non-native population was around 60,000 inhabitants, of whom half were enslaved Africans . The western borders of the purchase were later settled by the 1819 Adams–Onís Treaty with Spain , while the northern borders of the purchase were adjusted by the Treaty of 1818 with the British. Throughout the second half of the 18th century, the French colony of Louisiana became

24528-487: The territory than the hostile French. However, by December 1803, the British directed Barings to halt future payments to France. Barings relayed the order to Hopes, which agreed but under the condition that Baring bear the costs of the change and that its' Louisiana stock be reallocated to Hopes. Hopes also required Baring to refrain from trading in Louisiana stock without its consent. The final payments were made to France in April 1804. A dispute soon arose between Spain and

24696-526: The territory would be acquired "piece by piece". The risk of another power taking it from a weakened Spain made a "profound reconsideration" of this policy necessary. New Orleans was already important for shipping agricultural goods to and from the areas of the United States west of the Appalachian Mountains . Pinckney's Treaty , signed with Spain on October 27, 1795, gave American merchants "right of deposit" in New Orleans, granting them use of

24864-633: The territory, the most famous being the Lewis and Clark Expedition . France turned over New Orleans, the historic colonial capital, on December 20, 1803, at the Cabildo , with a flag-raising ceremony in the Plaza de Armas, now Jackson Square . Just three weeks earlier, on November 30, 1803, Spanish officials had formally conveyed the colonial lands and their administration to France. On March 9 and 10, 1804, another ceremony, commemorated as Three Flags Day ,

25032-506: The territory. Henry Adams claimed "The sale of Louisiana to the United States was trebly invalid; if it were French property, Bonaparte could not constitutionally alienate it without the consent of the French Chambers ; if it were Spanish property, he could not alienate it at all; if Spain had a right of reclamation, his sale was worthless." The sale, of course, was not "worthless"—the U.S. actually did take possession. Furthermore,

25200-510: The transfer on two grounds: First, France had previously promised in a note not to alienate Louisiana to a third party and, second, France had not fulfilled the Third Treaty of San Ildefonso by having the King of Etruria recognized by all European powers. The French government replied that these objections were baseless as the promise not to alienate Louisiana was not in the treaty of San Ildefonso itself and therefore had no legal force, and

25368-519: The treaty and in 1800 secretly returned Louisiana to Napoleonic France in the Third Treaty of San Ildefonso . This transfer was so secret that the Spanish continued to administer the territory. In 1801, Spain restored rights to use the Mississippi and New Orleans to the United States. Fearing that the cutoffs could occur again, President Thomas Jefferson proposed to buy the port of New Orleans from France for $ 10 million. Instead, faced with

25536-551: The treaty with a vote of 24 to seven on October 20. On the following day, October 21, 1803, the Senate authorized Jefferson to take possession of the territory and establish a temporary military government. In legislation enacted on October 31, Congress made temporary provisions for local civil government to continue as it had under French and Spanish rule and authorized the president to use military forces to maintain order. Plans were also set forth for several missions to explore and chart

25704-410: The upper Mississippi, drain most of the area bordering the eastern side of the Missouri River basin. Finally, on the south, the Ozark Mountains and other low divides through central Missouri, Kansas and Colorado separate the Missouri watershed from those of the White River and Arkansas River, also tributaries of the Mississippi River. Over 95 significant tributaries and hundreds of smaller ones feed

25872-403: The various fur enterprises, namely Hudson's Bay . Fort Raymond was later replaced by Fort Lisa at the confluence of the Missouri and Yellowstone in North Dakota; a second fort also called Fort Lisa was built downstream on the Missouri River in Nebraska. In 1809 the St. Louis Missouri Fur Company was founded by Lisa in conjunction with William Clark and Pierre Choteau, among others. In 1828,

26040-432: The vastly larger territory was offered for $ 15 million. Jefferson had authorized Livingston only to purchase New Orleans. However, Livingston was certain that the United States would accept the offer. The Americans thought that Napoleon might withdraw the offer at any time, preventing the United States from acquiring New Orleans, so they agreed and signed the Louisiana Purchase Treaty on April 30, 1803 (10 Floréal XI in

26208-442: The watershed receives an average of 8 to 10 inches (200 to 250 mm) of precipitation each year. However, the westernmost portions of the basin in the Rockies as well as southeastern regions in Missouri may receive as much as 40 inches (1,000 mm). The vast majority of precipitation occurs in summer in most of the lower and middle basin, although the upper basin is known for short-lived but intense summer thunderstorms such as

26376-399: The watershed's southeastern portion – include Omaha, Nebraska , north of the confluence of the Missouri and Platte Rivers; Kansas City, Missouri – Kansas City, Kansas , at the confluence of the Missouri with the Kansas River; and the St. Louis metropolitan area, south of the Missouri River just below the latter's mouth, on the Mississippi. In contrast, the northwestern part of the watershed

26544-416: The watershed, with most leading a nomadic lifestyle and dependent on enormous bison herds that roamed through the Great Plains . The first Europeans encountered the river in the late seventeenth century, and the region passed through Spanish and French hands before becoming part of the United States through the Louisiana Purchase . The Missouri River was one of the main routes for the westward expansion of

26712-416: The west. Downstream, it begins to define the border between the states of Nebraska and Missouri , then flows between the states of Missouri and Kansas . The Missouri swings east at Kansas City , where the Kansas River enters from the west, and so on into north-central Missouri. To the east of Kansas City, the Missouri receives, on the left side, the Grand River . It passes south of Columbia and receives

26880-452: Was conducted in St. Louis , to transfer ownership of Upper Louisiana from Spain to France, and then from France to the United States. From March 10 to September 30, 1804, Upper Louisiana was supervised as a military district, under its first civil commandant , Amos Stoddard , who was appointed by the War Department. Effective October 1, 1804, the purchased territory was organized into the Territory of Orleans (most of which would become

27048-452: Was hauled overland, most transport to and from the gold fields was done through the Missouri and Kansas Rivers, as well as the Snake River in western Wyoming and the Bear River in Utah, Idaho, and Wyoming. It is estimated that of the passengers and freight hauled from the Midwest to Montana, over 80 percent were transported by boat, a journey that took 150 days in the upstream direction. A route more directly west into Colorado lay along

27216-474: Was more difficult than acquiring it. Its European peoples primarily of ethnic French, Spanish and Mexican descent were largely Catholic ; in addition, there was a large population of enslaved Africans , as Spain had continued the transatlantic slave trade . This was particularly true in the area of the present-day state of Louisiana, which also contained a large number of free people of color . Both present-day Arkansas and Missouri already had some slaveholders in

27384-412: Was negotiated between France and the United States, without consulting the various Indian tribes who lived on the land and who had not ceded the land to any colonial power. The four decades following the Louisiana Purchase was an era of court decisions removing many tribes from their lands east of the Mississippi for resettlement in the new territory, culminating in the Trail of Tears . The purchase of

27552-471: Was one of the most concentrated gold placer strikes ever made. The range takes its name from the fact it is situated in a long belt-like arc. It stretches 75 miles (121 km), making it a mid-length subrange of the Rocky Mountains. To the east are the Little Belts and to the south, somewhat continuing this arc, is the Bridger Range . The Belt Supergroup series of rocks, which are primarily Precambrian mudstones, were named after this mountain range and

27720-457: Was such that the water was made muddy by it and could not clear itself." They recorded Pekitanoui or Pekistanoui as the local name for the Missouri. However, the party never explored the Missouri beyond its mouth, nor did they linger in the area. In addition, they later learned that the Mississippi drained into the Gulf of Mexico and not the Pacific as they had originally presumed; the expedition turned back about 440 miles (710 km) short of

27888-510: Was then under control of Toussaint Louverture after a slave rebellion . However, there was a growing concern in the U.S. that Napoleon would send troops to New Orleans after quelling the rebellion. In hopes of securing control of the mouth of the Mississippi, Jefferson sent Livingston to Paris in 1801 with the authorization to purchase New Orleans. In January 1802, France sent General Charles Leclerc , Napoleon's brother-in-law, on an expedition to Saint-Domingue to reassert French control over

28056-458: Was willing to "acquiesce with satisfaction" if the Congress approved the treaty. The Senate quickly ratified the treaty, and the House , with equal readiness, authorized the required funding. The fledgling United States did not have $ 15 million in its treasury; instead, it borrowed the sum from British and Dutch banks, at an annual interest rate of six percent. (See § Financing below.) The United States Senate consented to ratification of

28224-583: Was withheld from Livingston. Intent on avoiding possible war with France, Jefferson sent James Monroe to Paris in 1803 to negotiate a settlement, with instructions to go to London to negotiate an alliance if the talks in Paris failed. Spain procrastinated until late 1802 in executing the treaty to transfer Louisiana to France, which allowed American hostility to build. Also, Spain's refusal to cede Florida to France meant that Louisiana would be indefensible. Napoleon needed peace with Britain to take possession of Louisiana. Otherwise, Louisiana would be an easy prey for

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