What is the manufacturing belt?

The manufacturing belt, often referred to as the "Rust Belt," is a region in the northeastern and midwestern United States known for its historical industrial output, particularly in manufacturing and heavy industries such as steel and automobiles. This area includes states like Ohio, Pennsylvania, and Michigan, which were once the backbone of American manufacturing. Over the decades, however, many factories have closed or relocated, leading to economic decline and population loss in these regions. Today, efforts are being made to revitalize the manufacturing belt through diversification and technological innovation.