Area from the Northeast to upper-Midwest part of the U.S., known for its history of steel and manufacturing. This area is centered around Lake Erie, and generally includes Pennsylvania, western New York, Ohio, Michigan, and northern Illinois and Indiana. This area has also been refered to as the Industrial Heartland, or the Manufacturing Belt. In the early 1900s, this area drew many workers to the prevelant steel industry, and was also seen as a major manufacturing center due to its easy access to waterways.