Simplify the following text for a Grade 14 native English-speaking person.
Original: Hagerstown is also the chief commercial and industrial hub for a greater Tri-State Area that includes much of Western Maryland as well as significant portions of South Central Pennsylvania and the Eastern Panhandle of West Virginia .
Simplified: Hagerstown is also the chief commercial and industrial hub for a greater Tri-State Area that includes much of Western Maryland as well as great extents of South Central Pennsylvania and the Eastern Panhandle of West Virginia .