All articles starting with I
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Illig Qaghan
Illig Qaghan (颉利可汗) was a qaghan of the Eastern Turkic Khaganate who led large cavalry invasions of Tang China before being captured when Li Jing destroyed the khaganate in 630.
Illinois
Illinois, a midwestern U.S. state admitted December 3, 1818 as the 21st state, had 12.7 million residents in 2025. Known for Chicago, agriculture, and food processing; capitals were Kaskaskia, Vandalia, Springfield.
Illinois (Sufjan Stevens album)
Illinois, full title Sufjan Stevens Invites You To: Come On Feel The Illinoise, is Sufjan Stevens' 2005 chamber-folk concept album for the state of Illinois, the second entry in his Fifty States Project after Michigan, known for Chicago, Casimir Pulaski Day, and John Wayne Gacy, Jr.
Illinois and Michigan Canal
The Illinois and Michigan Canal is a 96-mile waterway in northeastern Illinois, opened in 1848 to link Lake Michigan at Chicago with the Illinois River at LaSalle.
Illinois Appellate Court
The Illinois Appellate Court is the state's intermediate appellate court, organized into five districts seated in Chicago, Elgin, Ottawa, Springfield, and Mount Vernon, with 54 judges hearing circuit court appeals in three-judge panels.
Illinois Basin
The Illinois Basin, also called the Eastern Interior Basin, is a large oval structural depression under parts of Illinois, Indiana, and Kentucky rich in coal and oil.
Illinois Bell
Illinois Bell is the Bell operating company providing local telephone service in Illinois since 1920, formerly the largest division of Ameritech and now operating as AT&T Illinois.
Illinois Central Railroad
The Illinois Central Railroad was an American railroad chartered by Illinois in 1851 and financed by the first major federal land grant; Canadian National acquired it in 1999.
Illinois Commerce Commission
The Illinois Commerce Commission is the public utility regulator of Illinois, created in 1921 to set rates and ensure reliable, low-cost service from the state's utilities.
Illinois Confederation
The Illinois Confederation, known to the French as Illiniwek, was a loose group of up to 12 Algonquian-speaking tribes in the central Mississippi River valley, most of present-day Illinois, numbering about 10,000 in the early 1600s.
Illinois Department of Corrections
Illinois Department of Corrections (IDOC), the Illinois state prison agency, established January 1, 1970; headquartered in Springfield, led by Director Latoya Hughes; runs adult facilities, parole, and reentry programs distinct from Indiana's IDOC.
Illinois Department of Public Health
Illinois Department of Public Health (IDPH), descended from the 1877 State Board of Health, is Illinois's state public health agency: $2.9 billion budget, 1,200 staff, quarantine authority, vital records, and local health department certification.
Illinois Department of Transportation
The Illinois Department of Transportation (IDOT) is the state agency responsible for Illinois' highways, bridges, transit, rail, and aviation. It was created on January 1, 1972.
Illinois Fighting Illini football
Illinois Fighting Illini football: University of Illinois Urbana-Champaign's FBS team in the Big Ten, playing at Gies Memorial Stadium (60,670). Four claimed national titles (1914, 1919, 1923, 1927); coached since 2020 by Bret Bielema, the 26th head coach.
Illinois Fighting Illini men's basketball
Illinois Fighting Illini men's basketball: University of Illinois Urbana-Champaign Big Ten program at State Farm Center (capacity 15,544). Six Final Fours (1949, 1951, 1952, 1989, 2005, 2026), 36 NCAA appearances, 18 Big Ten titles, 2005 national runner-up.
Illinois General Assembly
Illinois General Assembly: bicameral state legislature of Illinois (Senate, House of Representatives), created by the 1818 constitution, meeting in the Springfield capitol; 59 senators, 118 representatives, no term limits, currently Democratic-controlled 104th General Assembly.
Illinois House of Representatives
Illinois House of Representatives: lower chamber of the Illinois General Assembly, 118 members from single-member districts, two-year terms, currently 78 Democrats and 40 Republicans, Speaker Emanuel "Chris" Welch.
Illinois Institute of Technology
Illinois Institute of Technology (Illinois Tech), a private Ph.D.-granting technology university in Chicago formed in 1940 by merging Armour Institute (1890) and Lewis Institute; Mies van der Rohe designed its campus; HLC accredited, with a 2026 Financial Issue designation.
Illinois Natural History Survey
Illinois Natural History Survey (INHS), founded 1858 as the Natural History Society of Illinois, is the state biological survey of the Prairie Research Institute at University of Illinois Urbana-Champaign, holding millions of specimens.
Illinois Newspaper Project
Illinois Newspaper Project (INP), University of Illinois Urbana-Champaign program begun 1987 under the U.S. Newspaper Program; catalogs, microfilms, and digitizes Illinois newspapers, contributing over 600,000 pages to Chronicling America and the Illinois Digital Newspaper Collections.
Illinois Power Agency
The Illinois Power Agency is an Illinois state agency that procures electricity and renewable energy credits for utilities like ComEd and administers the Illinois Renewable Portfolio Standard.
Illinois Secretary of State
The Illinois Secretary of State is the state's driver licensing and vehicle registration authority, also the state librarian, with Alexi Giannoulias as its 38th officeholder since 2023.
Illinois Senate
The Illinois Senate is the 59-member upper chamber of the Illinois General Assembly, meeting in Springfield. Senators serve staggered 2-4-4 or 4-4-2 decade term cycles from single-member districts; Democrats hold the majority.
Illinois state museum herbarium
Illinois State Museum herbarium (ISM), founded 1938, at the Research & Collections Center in Springfield; over 111,000 vascular plant specimens of Illinois flora, including the Cutler-Blake ethnobotanical collection.
Illinois State University
Illinois State University, founded in 1857 as Illinois State Normal University, is a public university in Normal, Illinois, the oldest public university in Illinois and a leading preparer of teachers.
Illinois STRS
Illinois STRS, the Teachers' Retirement System of the State of Illinois (TRS), is the pension plan covering Illinois public school teachers outside Chicago, created in 1939.
Illinois Structural Health Monitoring Project
The Illinois Structural Health Monitoring Project is a University of Illinois research program developing wireless smart sensor systems for civil infrastructure, deployed on the Jindo Bridge in South Korea.
Illinois Tool Works
Illinois Tool Works Inc. is a Fortune 300 industrial manufacturer founded in Chicago in 1912, with 88 divisions in 49 countries and $16 billion in 2025 revenue.
Illinois Waterway locks and dams
The Illinois Waterway locks and dams are federal structures on a 268-mile, 9-foot channel from Joliet to near Beardstown, carrying barge traffic between Lake Michigan and the Mississippi.
Illinois Zero Emission Credit program
The Illinois Zero Emission Credit program is a state program created by the 2016 Future Energy Jobs Act in which utilities buy credits supporting nuclear plants.