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The history of Oregon, a U.S. state, may be considered in five eras: geologic history, inhabitation by native peoples, early exploration by Europeans (primarily fur traders), settlement by pioneers, and modern development.
The term "Oregon" may refer to:
Volcanic activity in the region has been traced to 40 million years ago, in the Eocene era, forming much of the region's landscape. In the Pleistocene era (the last ice age, two million to 700,000 years ago), the Columbia River broke through Cascade Range, forming the Columbia River Gorge.
The Columbia River and its drainage basin experienced some of the world’s greatest known floods toward the end of the last ice age. The periodic rupturing of ice dams at Glacial Lake Missoula resulted in discharge rates ten times the combined flow of all the rivers of the world, as many as forty times over a thousand-year period.
Water levels during the Missoula Floods have been estimated at 1,250 feet (381 m) at the Wallula Gap (in present-day Washington), 830 feet (253 m) at Bonneville Dam, and 400 feet (122 m) over current day Portland, Oregon. The floods' periodic inundation of the lower Columbia River Plateau deposited rich lake sediments, establishing the fertility that supports extensive agriculture in the modern era. They also formed many unusual geological features, such as the channeled scablands of eastern Washington.
Mount Mazama, once the tallest mountain in the region at 11,000 feet, had a massive volcanic eruption approximately 5677 B.C. The eruption, estimated to have been 42 times more powerful than the 1980 eruption of Mount St. Helens, reduced Mazama's approximate 11,000 foot (c.3,350 m) height by around half a mile (about 1 km) when much of the volcano fell into the volcano's partially emptied neck and magma chamber. Mazama's collapsed caldera, in today's southern Oregon, contains Crater Lake, and the entire mountain is located in Crater Lake National Park.
The Klamath Native Americans of the area thought that the mountain was inhabited by Llao, their god of the underworld. After the mountain destroyed itself the Klamaths recounted the events as a great battle between Llao and his rival Skell, their sky god.
The 1700 Cascadia earthquake resulted from a rupture in the Juan de Fuca Plate along the coast of the Pacific Northwest. The earthquake caused a tsunami that was detected in Japan; it may also be linked to the Bonneville Slide, in which a large part of Washington's Table Mountain collapsed into the Columbia River Gorge, damming the river and forming the Bridge of the Gods, a land bridge remembered in the oral history of local Native Americans.
Celilo Falls, a series of rapids on the Columbia River just upstream of present-day The Dalles, Oregon, was a fishing site for natives for several millennia. Native people traveled to Celilo Village from all over the Pacific Northwest and beyond to trade. The rapids were submerged in 1957 with the construction of The Dalles Dam.
In 1980, Mount St. Helens in nearby Washington erupted violently, temporarily reducing the Columbia River's depth to as little as 13 feet, and disrupting Portland's economy. The eruption deposited ash as far into Oregon as Bend.
Although there is considerable evidence that Paleo-Indians lived in the Pacific Northwest 15,000 years ago, the first record of human activity within the boundaries of present-day Oregon came from archaeologist Luther Cressman's 1938 discovery of sage bark sandals near Fort Rock Cave that places human habitation in Oregon as early as 13,200 years ago. Cressman found more evidence of early human activity at Paisley Caves, north of Paisley, Oregon, caves where researchers affiliated with the University of Oregon have conducted new excavations during the 21st century. By 8000 B.C. there were settlements across the state, with the majority concentrated along the lower Columbia River, in the western valleys, and around coastal estuaries.
Native peoples generally welcomed the arrival of Europeans in ther 19th century, for the increased trading opportunities; however, the introduction of foreign diseases would prove devastating to local populations. Later, American initiatives to capture the natural resources of the west, perhaps most notably along the Columbia River, would collide with the interests of natives; many tribes accepted multi-million dollar settlements from the U.S. government in exchange for giving up traditional fishing sites, moving to reservations.
Since the late 20th century, the establishment of casinos on reservations (where state law does not apply) has provided some income to tribes that are generally impoverished. Throughout the governorship of Ted Kulongoski, the Warm Springs Indians have negotiated for the right to build an off-reservation casino in the Columbia River Gorge.
The perception of Oregon by early European explorers and settlers varied according to the purpose and method of exploration. Official explorers came, at first, primarily by sea, in many cases seeking the Northwest Passage, and later over land, but missed many areas of the state now known as Oregon. Fur traders and trappers, initially from the Hudson's Bay Company, explored the land more thoroughly, documenting encounters with most of the local Indian tribes. Christian missionaries, and later immigrants planning to settle permanently in Oregon, sent glowing reports back to their families in the east.
Juan Rodríguez Cabrillo sighted southern Oregon off the Pacific coast in 1543. In 1592, Juan de Fuca undertook detailed mapping and studies of ocean currents. Stops along these trips included Oregon as well as the strait now bearing his name. Exploration was retaken routinely in 1774, starting by the expedition of frigate Santiago by Juan José Pérez Hernández (see Spanish expeditions to the Pacific Northwest). Soon the coast of Oregon became a valuable trading route to Asia.
Spanish explorers found a way to explore the Pacific coast as early as 1565, sending vessels northeast from the Philippines, riding the Kuroshio Current in a sweeping circular route across the northern part of the Pacific. These ships – 250 in as many years – would typically not land before reaching Cape Mendocino in California, but some landed or wrecked in what is now Oregon. Nehalem Indian tales recount strangers and the discovery of items like chunks of beeswax and a lidded silver vase, likely connected to the 1707 wreck of the San Francisco Xavier.
Juan Pérez explored the coast of the Pacific Northwest north to British Columbia in 1774. He was the first European to see Yaquina Head on the Oregon Coast. In 1775 another Spanish expedition, under Juan Francisco de la Bodega y Quadra and Bruno de Heceta, explored the coast. While returning south Heceta found the mouth of the Columbia River, but was unable to enter.
British explorer James Cook explored the Oregon Coast in 1778 in search of the Northwest Passage. Beginning in the late 1780s many ships from Britain, America, and other countries sailed to the Pacific Northwest to engage in the region's emerging Maritime Fur Trade business. American sea captain Robert Gray entered the Columbia in 1792, and was soon followed by a ship under the command of George Vancouver, a British captain, who also explored Puget Sound and claimed it for Britain.
The Lewis and Clark Expedition traveled through the region during their expedition to explore the Louisiana Purchase. They built their winter fort at Fort Clatsop, near the mouth of the Columbia. Exploration by Lewis and Clark (1805–1806) and the United Kingdom's David Thompson, who extensively explored the Columbia River from 1807–1811, publicized the abundance of fur-bearing animals in the area.
Britain and the U.S. both claimed ownership of Oregon. The dispute, friendly at first, escalated into the threat of war before it was resolved amicably in 1846 by splitting the region 50-50.
Following the Anglo American Treaty of 1818, the region was "jointly occupied" by the U.S. and Britain. The Americans referred to the region as Oregon Country, while the British knew it as the Hudson's Bay Company's Columbia District, which was administered from Fort Vancouver near present day Vancouver, Washington.
During the 1820s and early 1830s the American West was explored by private trappers who formed fur trading companies originating from St. Louis. One of these privateer trappers and explorers was Jedediah Smith who led expeditions into the American West. On October 29, 1830 Smith sent Jackson's Secretary of War John H. Eaton a letter and map containing information that he had gathered from 1824 to 1830 of his explorations into the Rockies, the South Pass, and Pacific Northwest. Smith recommended that President Jackson terminate the Treaty of 1818 that gave the British free rein over the Columbia River, and reported that the Indians favored the British over the Americans.
British fur interests tried to block Americans by creating a "fur desert" along the eastern and southern borders by trapping all the animals and leaving nothing for the Americans.
The balance of power shifted in the 1830s as thousands of American settlers arrived, completely dominating the southern half of the disputed region. Joint occupation ended with the signing of the Oregon Treaty in 1846, when Britain and the U.S. split the disputed region equally, along present borders, with the U.S. generally receiving lands south of the 49th parallel.
The Astor Expedition of 1810–1812, financed by American businessman John Jacob Astor, brought fur traders to the future site of Astoria by both land and sea. Fort Astoria was the first permanent white settlement in the region. Although the fort would remain under American control for only a short time, it would become a component of the United States' later claim on the region. A party returning east discovered the South Pass through the Rocky Mountains, which would become an important feature of the Oregon Trail.
At risk of being captured by the British during the War of 1812, Fort Astoria and all other Pacific Fur Company assets in the Oregon Country were sold to the Montreal-based North West Company in October 1813. The North West Company had already been expanding into the Pacific Northwest and dominated the region unchallenged from the 1813 acquisition of the Pacific Fur Company until 1821, when it was absorbed into the Hudson's Bay Company. During this time the North West Company put the Astorian scheme into practice, sending supplies by sea to the Columbia River and exporting furs directly to China. The Hudson's Bay Company expanded the system and during the 1820s and 1830s dominated the Pacific Northwest from its Columbia District headquarters at Fort Vancouver (built in 1825 by the District's Chief Factor John McLoughlin across the Columbia from present-day Portland). Although fur depletion and a crash in fur prices undermined the company in the early 1840s, it remained an important presence until the Oregon Treaty of 1846.
In the 1830s, several parties of Americans traveled to Oregon, further establishing the Oregon Trail. Many of these emigrants were missionaries seeking to convert natives to Christianity. Jason Lee was the first, traveling in Nathaniel Jarvis Wyeth's party in 1833 and establishing the Oregon Mission in the Willamette Valley; the Whitmans and Spaldings arrived in 1836, establishing the Whitman Mission east of the Cascades. In 1839 the Peoria Party embarked for Oregon from Illinois.
In 1841, wealthy master trapper and entrepreneur Ewing Young died without a will, and there was no system to probate his estate. A probate government was proposed at a meeting after Young's funeral. Doctor Ira Babcock of Jason Lee's Methodist Mission was elected Supreme Judge. Babcock chaired two meetings in 1842 at Champoeg (half way between Lee's mission and Oregon City) to discuss wolves and other animals of contemporary concern. These meetings were precursors to an all-citizen meeting in 1843, which instituted a provisional government headed by an executive committee made up of David Hill, Alanson Beers, and Joseph Gale. This government was the first acting public government of the Oregon Country before American annexation.
The Oregon Trail brought many new settlers to the region, starting in 1842–1843, after the United States agreed to jointly settle the Oregon Country with the United Kingdom. For some time, it seemed the United States and the United Kingdom would go to war for a third time in 75 years (see Oregon boundary dispute), but the border was defined peacefully in 1846 by the Oregon Treaty. The border between the United States and British North America was set at the 49th parallel. The Oregon Territory was officially organized in 1848.
Numerous efforts to find easier overland passage to the Willamette Valley were undertaken beginning in the 1840s. The Barlow Road, Meek Cutoff, and Applegate Trail represented efforts to cross the Cascades in the northern, central, and southern parts of Oregon, respectively. The Barlow Road would become the final leg of the Oregon Trail after its construction in 1846, and the Santiam Wagon Road would cut through the central part of the mountains, succeeding where Meek had failed.
Settlement increased because of the Donation Land Claim Act of 1850, in conjunction with the forced relocation of the native population to Indian reservations. The state was admitted to the Union on February 14, 1859.
At the outbreak of the American Civil War, regular U.S. troops were withdrawn and sent east. Volunteer cavalry and infantry were recruited in California and sent north to Oregon to keep peace and protect the populace. Oregon also raised the 1st Oregon Cavalry that was activated in 1862 and served until June 1865. During the Civil War, immigrants continued to clash with the Paiute, Shoshone and Bannock tribes in Oregon, Idaho and Nevada until relations degenerated into the bloody 1864 - 1868 Snake War. The 1st Oregon Volunteer Infantry Regiment was formed in 1864 and its last company was mustered out of service in July 1867. Both units were used to guard travel routes and Indian reservations, escort immigrant wagon trains, and protect settlers from Indian raiders. Several infantry detachments also accompanied survey parties and built roads in central and southern Oregon.
In the 1880s, the proliferation of railroads assisted in marketing of the state's lumber and wheat, as well as the more rapid growth of its cities. This included the connection of the state to the Eastern United States via links to the transcontinental railroads that allowed for faster movement of goods and people. Immigration to Oregon increased after the connection to the east. Additional transportation improvements included the construction of several locks and canals to ease river navigation.
Also in the 1880s, writer Frances Fuller Victor published both fiction and histories that drew on her extensive research of the history of the region, informed by personal interviews with a number of Oregon pioneers. Her most noted non-fiction, which covered many western states, was written while under contract with Hubert Howe Bancroft's History Company, and at the time was published under his name. Her writing was said to accurately capture the notion of Manifest Destiny in this period of American expansion.
Both the Oregon Territory and the State of Oregon have had laws and policies discriminating against people of non-white racial backgrounds. An 1844 territorial statute outlawed slavery but also mandated free slaves to leave the territory. A law adopted by the state in 1862 required all ethnic minorities to pay a $5 annual tax. Interracial marriage was prohibited by law between (approximately) 1861 and 1951.
Industrial expansion began in earnest following the construction of the Bonneville Dam in 1933–1937 on the Columbia River. The power, food, and lumber provided by Oregon helped fuel the development of the West, although the periodic fluctuations in the nation's building industry have hurt the state's economy on multiple occasions.
The state has a long history of polarizing conflicts: Native Americans vs. British fur trappers, British vs. settlers from the U.S., ranchers vs. farmers, wealthy growing cities vs. established but poor rural areas, loggers vs. environmentalists, white supremacists vs. anti-racists, social progressivism vs. small-government conservatism, supporters of social spending vs. anti-tax activists, and native Oregonians vs. Californians (or outsiders in general). Oregonians also have a long history of secessionist ideas, with people in various regions and on all sides of the political spectrum attempting to form other states and even other countries. (See State of Jefferson, Cascadia, and Ecotopia.)
In 1902, Oregon approved of a system of direct legislation by the state’s citizens by way of initiative and referendum, known as the Oregon System, and in 1908 also empowered its citizens to recall public officials by ballot initiative. Oregon state ballots often include politically conservative proposals such as anti-gay and pro-religious measures side-by-side with politically liberal issues like drug decriminalization which demonstrates the wide spectrum of political thought in the state.
The historical policies of racial discrimination have had long-term effects on Oregon's population. A 1994 report from an Oregon Supreme Court task force found minorities more likely to be arrested, charged, convicted, incarcerated and on probation than "similarly situated non-minorities." The report does not place blame on individuals, but instead points out the problems of institutional racism. The report recommends multicultural training of the existing justice system personnel and also recommends diversifying the perspectives, backgrounds and demographics of future hires.