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Illinois (/ˌɪlɪˈnɔɪ/ IL-in-OY) is a state in the Midwestern region of the United States. It borders Lake Michigan to its northeast, the Mississippi River to its west, and the Wabash and Ohio rivers to its south. Of the fifty U.S. states, Illinois has the fifth-largest gross domestic product (GDP), the sixth-largest population, and the 25th-most land area. Its largest urban areas include Chicago and the Metro East of Greater St. Louis, as well as Peoria, Rockford, Champaign–Urbana, and Springfield, the state's capital.

Illinois has a highly diverse economy, with the global city of Chicago in the northeast, major industrial and agricultural hubs in the north and center, and natural resources such as coal, timber, and petroleum in the south. Owing to its central location and favorable geography, the state is a major transportation hub: the Port of Chicago has access to the Atlantic Ocean through the Great Lakes and Saint Lawrence Seaway and to the Gulf of Mexico from the Mississippi River via the Illinois Waterway. Chicago has been the nation's railroad hub since the 1860s, and its O'Hare International Airport has been among the world's busiest airports for decades. Illinois has long been considered a microcosm of the United States and a bellwether in American culture, exemplified by the phrase Will it play in Peoria?.

Present-day Illinois was inhabited by various indigenous cultures for thousands of years, including the advanced civilization centered in the Cahokia region. The French were the first Europeans to arrive, settling near the Mississippi and Illinois River in the 17th century in the region they called Illinois Country, as part of the sprawling colony of New France. Following U.S. independence in 1783, American settlers began arriving from Kentucky via the Ohio River, and the population grew from south to north. Illinois was part of the United States' oldest territory, the Northwest Territory, and in 1818 it achieved statehood. The Erie Canal brought increased commercial activity in the Great Lakes, and the small settlement of Chicago became one of the fastest growing cities in the world, benefiting from its location as one of the few natural harbors in southwestern Lake Michigan. The invention of the self-scouring steel plow by Illinoisan John Deere turned the state's rich prairie into some of the world's most productive and valuable farmland, attracting immigrant farmers from Germany and Sweden. In the mid-19th century, the Illinois and Michigan Canal and a sprawling railroad network greatly facilitated trade, commerce, and settlement, making the state a transportation hub for the nation.

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The tornado near peak intensity
The tornado near peak intensity

The 2015 Rochelle–Fairdale tornado was an extremely violent and long-lived tornado that tore through the communities near Rochelle and in Fairdale, Illinois throughout the evening hours of April 9, 2015. Part of a larger severe weather event that impacted the Central United States, the tornado first touched down in Lee County at 6:39 p.m. CDT (22:39 UTC). It progressed through the counties of Ogle, DeKalb, and Boone before finally dissipating at 7:20 p.m. CDT. Along the tornado's 30.14 mi (48.51 km) path, numerous structures were heavily damaged or destroyed, especially in the small town of Fairdale where two fatalities and eleven injuries were recorded. A few well-constructed homes were swept completely away, indicative of peak winds near 200 mph (320 km/h), the upper bounds of an EF4 tornado. In the aftermath of the event, hundreds of citizens assisted in cleanup and recovery efforts. Economic losses from the tornado reached $19 million (2015 USD). (Read more...)

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1837 illustration of Black Hawk from History of the Indian Tribes of North America
1837 illustration of Black Hawk from History of the Indian Tribes of North America

Black Hawk, or Ma-ka-tai-me-she-kia-kiak in the Sauk language, (1767 – October 3, 1838) was a war leader of the Sauk American Indian tribe in what is now the Midwest of the United States. He earned his status as a war chief or captain by leading raiding and war parties as a young man, and a band of Sauk warriors during the Black Hawk War of 1832.

Black Hawk was born in 1767 in the village of Saukenuk on the Rock River (present-day Rock Island, Illinois). During the War of 1812, Black Hawk had fought on the side of the British against the U.S., hoping to push white American settlers away from Sauk territory. Later he led a band of Sauk and Fox warriors, known as the British Band, against European-American settlers in Illinois and present-day Wisconsin in the 1832 Black Hawk War. After the war, he was captured by U.S. forces and taken to the eastern United States. Shortly before being released from custody, Black Hawk told his story to an interpreter; aided also by a newspaper reporter, he published Autobiography of Ma-Ka-Tai-Me-She-Kia-Kiak, or Black Hawk, Embracing the Traditions of his Nation.... Black Hawk died in 1838 in what is now southeastern Iowa. He has been honored by an enduring legacy: his book, many eponyms, and other tributes. (Read more...)

Did you know...

  • ... that although Olga Hartman believed that her basic research on marine worms had no practical value, it was applied to experimental studies of oysters?
  • ... that Jack Washburn was called "Cinderella Boy" for winning a starring role in his first Broadway show?


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Education: Higher educationSecondary education

Environment: Ecoregions of IllinoisGeography of IllinoisGeology of IllinoisProtected areas of Illinois

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History: ChicagoIlliniwekIllinois CentralIllinois-Wabash CompanyIllinois TerritoryAbraham LincolnBlack Hawk WarCahokia1871 Great Chicago FireMakataimeshekiakiakMiamiMississippian cultureNorthwest TerritoryPotawatomiRoute 66Sauk

People: Governors of IllinoisMayors of ChicagoLongest Serving Mayor in IllinoisOrder of Lincoln Laureates

Sports: Chicago BanditsChicago BearsChicago BullsChicago CubsChicago FireChicago RushChicago SkyChicago White SoxChicago WolvesThe Fighting IlliniIllinois State RedbirdsNorthwestern WildcatsPeoria RivermenRockford IceHogsRockford ThunderSouthern Illinois MinersSouthern Illinois University SalukisChicago Yacht Club Race to MackinacChicago Marathon

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