A 1956 Idaho history textbook says: "Idaho" is a Shoshoni Indian exclamation. The first is "Ee", which in English conveys the idea of "coming down". Idaho also shares a short border with the Canadian province of British Columbia to the north.The second is "dah" which is the Shoshoni stem or root for both "sun" and "mountain". The landscape is rugged with some of the largest unspoiled natural areas in the United States.) is a state in the northwestern region of the United States. Idaho was eventually admitted to the Union on July 3, 1890, becoming the 43rd state.It borders the state of Montana to the east and northeast, Wyoming to the east, Nevada and Utah to the south, and Washington and Oregon to the west. Idaho prior to European settlement was inhabited by Native American peoples, some of whom still live in the area. Forming part of the Pacific Northwest (and the associated Cascadia bioregion), Idaho is divided into several distinct geographic and climatic regions.Other significant rivers include the Coeur d'Alene River, the Spokane River, the Boise River, and the Payette River.The Salmon River empties into the Snake in Hells Canyon and forms the southern boundary of Nez Perce County on its north shore, of which Lewiston is the county seat.Other mountain ranges in Idaho include the Bitterroot Range, the White Cloud Mountains, the Lost River Range, the Clearwater Mountains, and the Salmon River Mountains. This influence has a moderating effect in the winter where temperatures are not as low as would otherwise be expected for a northern state with predominantly high elevations.Idaho has two time zones, with the dividing line approximately midway between Canada and Nevada. The maritime influence is least prominent in the state's eastern part where the precipitation patterns are often reversed, with wetter summers and drier winters, and seasonal temperature differences are more extreme, showing a more semi-arid continental climate.
Idaho is a Rocky Mountain state with abundant natural resources and scenic areas.
A number of science and technology firms are either headquartered in Idaho or have factories there, and the state also contains the Idaho National Laboratory, which is the country's largest Department of Energy facility.
Idaho's agricultural sector supplies many products, but the state is best known for its potato crop, which comprises around one-third of the nationwide yield.
However, the name "Idaho" did not fall into obscurity.
The same year Congress created Colorado Territory, a county called Idaho County was created in eastern Washington Territory.
territory with the signing of the Oregon Treaty of 1846, but a separate Idaho Territory was not organized until 1863, instead being included for periods in Oregon Territory and Washington Territory.