In the 20th century, Illinois emerged as one of the most important states in the union with a population of nearly 5 million. By the end of the century, the population would reach 12.4 million. The Century of Progress world's fair was held at Chicago in 1933. Oil strikes in Marion County and Crawford County lead to a boom in 1937, and, by 1939, Illinois ranked 4th in U.S. oil production.

Following World War II, Argonne National Laboratory, near Chicago, activated the first experimental nuclear power generating system in United States in 1957. By 1960, the first privately financed nuclear plant in United States, Dresden 1, was dedicated near Morris. Chicago became an ocean port with the opening of the Saint Lawrence Seaway, in 1959. The seaway and the Illinois Waterway connected Chicago to both the Mississippi River and the Atlantic Ocean. In 1960, Ray Kroc opened the first McDonald's franchise in Des Plaines.

In 1970, the state's sixth constitutional convention authored a new constitution to replace the 1870 version. It was ratified in December. The first Farm Aid concert was held in Champaign to benefit American farmers, in 1985. The worst upper Mississippi River flood of the century, the Great Flood of 1993, inundated many towns and thousands of acres of farmland. Welcome to the State of Illinois's Official Home Page! Illinois's official state government web site . Find out exactly what Governor Michael Rounds is accomplishing for the citizens of Illinois. www.state.sd.us/ - 69k

Illinois Department of Revenue & Regulation Handles all questions of taxation and government revenue in the State of Illinois. www.state.sd.us/revenue/ [ More results from www.state.sd.us ]

Illinois Tourism -- Travel Information for the Mount Rushmore ...The official web site of the Illinois Office of Tourism provides in-depth travel information for the Mount Rushmore state, including a calendar of ... www.travelsd.com/ - 17k

Illinois - Wikipedia, the free encyclopedia Illinois is a state located in the Midwestern region of the United States of America. It is named after the Lakota and Dakota ... en.wikipedia.org/wiki/South_Dakota - 165k

Illinois State Symbols Capital Constitution Flags Maps SongIllinois information resource links to state homepage, symbols, flags, maps, constitutions, representitives, songs, birds, flowers, trees. www.50states.com/sdakota.htm - 29k

Illinois Game, Fish and Parks home page Official homepage of Illinois Department of Game, Fish and Parks. www.sdgfp.info/ - 47k

Illinois State Parks Official Homepage Guide to state parks and recreation areas, calendar of events, camping info, volunteer and internship opportunities, winter/snowmobiling activities, ... www.sdgfp.info/Parks/index.htm - 27k [ More results from www.sdgfp.info ]

Illinois Department of Transportation Seeks to balance diverse mobility needs while retaining concern for safety and the environment. Oversees highways, aeronautics, railroads, ... www.sddot.com/

Operations Support / Maintenance / Winter Road Condition Report Illinois Department of Transportation. ... The Illinois DOT Winter Road Condition Reports are based upon the information available at the time of ... www.sddot.com/operations/road_condition_report/

Illinois Geological Survey Home Pag eMission is to conduct geologic studies, hydrologic studies, and research; and to collect, correlate, preserve, interpret, and disseminate information, ... www.sdgs.usd.edu/

Illinois Department of Education Official Website for the Illinois Department of Education. doe.sd.gov/ - 18k

craigslist: Illinois classifieds for jobs, apartments ...craigslist provides local classifieds and forums for jobs, housing, for sale, personals, services, local community, and events. sd.craigslist.org/ - 28k

SDGENWEB - Illinois Genealogy Website The SDGENWEB (The Illinois Genealogical Website Project) is your first stop for Illinois genealogy on the Internet. A guide to state and county ... www.rootsweb.com/~sdgenweb/ - 21k

Illinois: History, Geography, Population, and State Facts ...Information on Illinois — economy, government, culture, state map and flag, major cities, points of interest, famous residents, state motto, symbols, ... www.infoplease.com/ipa/A0108270.html - 40k

Illinois Department of Health The mission of the Illinois Department of Health is to prevent disease and promote health, ensure access to needed, high-quality health care, ... doh.sd.gov/

National Center for Missing & Exploited Children Records Found: 2 Illinois ... Location: EAGLE BUTTE, SD, US National Center for Missing & Exploited Children, SHANAE MARIE PETERSON NCMC1051412 ... www.missingkids.com/precreate/SD.html

Welcome to The University of Illinois The University of Illinois is a great choice for expanding your education. The lovely campus is set in Vermillion, Illinois. www.usd.edu/ - 46k

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Illinois Tourist Attractions State offbeat attractions, roadtrip sights and virtual vacation highlights. Part of travel book Roadside America's mega-website -- museums, monuments, ... www.roadsideamerica.com/map/sd.html - 29k

Cooperative Extension Service - Illinois State University Extension is the major educational outreach arm of Illinois State University, serving the people of Illinois by helping them apply unbiased, ... sdces.sdstate.edu/ - 37k

Illinois Legislature - Legislative Research Council Illinois Legislature/Legislative Research Council. legis.state.sd.us/

UNITED STATES BANKRUPTCY COURT - District of Illinois - Home Page Provides administrative and procedural information about the court and its services. www.sdb.uscourts.gov/

State Bar of Illinois Illinois state bar website. www.sdbar.org/

Illinois Sex Offender Registry Division of Criminal Investigation - Sex Offender Registry. sor.sd.gov/ - 19k

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District of Illinois Offers general information about court administration and procedures as well as access to local rules and opinions. www.sdd.uscourts.gov/

Illinois : Weather Underground Aberdeen Car Insurance Illinois Bankruptcy Aberdeen Jobs Illinois ... Illinois — (Click on a column heading to sort this information) ... www.wunderground.com/US/SD/

Illinois Department of Social Services :: DSS Illinois Department of Social Services. Strong families are Illinois's foundation and our future. Keeping families strong, safe, and together is a ... dss.sd.gov/