Match each of these art forms with the region of the US where they were commonly produced?

Sure, I'd be happy to help with that. Here are the matches for the art forms commonly produced in the following regions of the US:

1. Bluegrass music - Appalachian region
2. Graffiti art - New York City
3. Chicano muralism - Southwest region, particularly in California
4. Abstract Expressionism - Associated with the New York School and commonly produced in New York City