Chicago has a highly diversified economy that has been aided by an extensive transportation and distribution network. It is the nation's most important rail and trucking center and is the location of one of the busiest airports in the United States, Chicago-O'Hare International Airport. Chicago has several commuter railroad lines that serve the suburbs. In addition, the Chicago Transit Authority operates bus, subway, and EL (elevated train) services in the city.
The city is a significant port for both domestic and international trade. Great Lakes freighters and river barges deliver bulk commodities such as iron ore, limestone, coal, chemicals, petroleum, and grain. Some of this freight is destined for processing plants in the heavily industrialized Calumet River area. Foreign vessels arrive via the St. Lawrence Seaway, bringing products such as automobiles, steel, fish, and alcoholic beverages. The boats depart carrying machinery, farm equipment, hides, and lumber, as well as a variety of food products.
Microsoft® Encarta® Online Encyclopedia 2001
http://encarta.msn.com © 1997-2001 Microsoft Corporation. All rights reserved. Chicago Information info
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