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The Illinois side includes Henry County, Mercer County, and Rock Island County. [4] In extreme northwestern Illinois the Driftless Zone, a region of unglaciated and therefore higher and more rugged topography, occupies a small part of the state. Charles Mound, located in this region, is the state's highest elevation above sea level.
The Archer Daniels Midland corporation in Decatur, Illinois, is the world's leading producer of ethanol from corn. The National Corn-to-Ethanol Research Center (NCERC), the world's only facility dedicated to researching the ways and means of converting corn (maize) to ethanol is located on the campus of Southern Illinois University Edwardsville.
The location of the state of Illinois in the United States of America. The following outline is provided as an overview of and topical guide to the U.S. state of Illinois: Illinois – fifth most populous of the 50 states of the United States of America.
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 capital city is Springfield in the center of the state, and the state's largest city is Chicago in the northeast. Present-day Illinois was inhabited by Indigenous cultures for
The geology of Illinois includes extensive deposits of marine sedimentary rocks from the Palaeozoic, as well as relatively minor contributions from the Mesozoic and Cenozoic. Ice age glaciation left a wealth of glacial topographic features throughout the state.
View history; General ... World's fair sites in Illinois (4 P) Σ. Illinois geography stubs (7 C, 4 P) Pages in category "Geography of Illinois"
Southern Illinois is a region of the U.S. state of Illinois comprising the southern third of the state, principally south of Interstate 70.Part of downstate Illinois, it is bordered by the two most voluminous rivers in the United States: the Mississippi below its connection with the Missouri River to the west and the Ohio River to the east and south, with the tributary Wabash River, extending ...
Geographically, the county is the sixth-largest in Illinois by land area and the largest by total area. It shares the state's Lake Michigan shoreline with Lake County . Including its lake area, Cook County has a total area of 1,635 square miles (4,234.6 km 2 ), the largest county in Illinois, of which 945 square miles (2,447.5 km 2 ) is land ...