[xzmattzx]

Baltimore, Camden, and Reading were never the Rust Belt. Massachusetts was never the Rust Belt. Just because a place had manufacturing 75-100 years ago doesn't mean it's the Rust Belt.

Maybe someone can correct me, but the Rust Belt is generally accepted to be Midwest/Great Lakes cities that saw industries leave when Japan became a giant, and were run down for a couple decades. The Rust Belt is based on what happened in the 1970s and 1980s. Not every place in the Rust Belt is part of the Rust Belt, but the Rust Belt generally is Buffalo, western Pennsylvania, northern Ohio, southeast/southern Michigan, northern Indiana, and northern Illinois. At least that is what I have always thought it was.