Complex sentence: The current Safeway locations in Delaware are served by division offices in the Baltimore-Washington metropolitan area, where Safeway has long been the dominant grocer; however, the majority of Safeway stores operate in the Western United States, where the chain originated.
Split into simpler sentences: The current Safeway locations in Delaware are served by division offices in the Baltimore-Washington metropolitan area, where Safeway has long been the dominant grocer. However, the majority of Safeway stores operate in the Western United States, where the chain originated.