Illinois

Illinoisis astatein themidwestern regionof theUnited States. It is a mostly flat plains state, with the majority being farmland except for the river valleys and the south, which are hilly and forested.Often noted as a microcosmof the entire country, Illinois has long had a reputation as a bellwether both in social and cultural terms, and politics.WithChicagoin the northeast, small industrial cities and greatagricultural productivityin central and northern Illinois, andnatural resourceslike coal, timber, and petroleum in the south, Illinois has a diverse economic base and is a majortransportation hub.For decades,O'Hare International Airporthas been ranked as one of the world's busiest airports.