Original sentence: The six surveys identified or revisited over 750 archaeological sites in 15 counties (Alachua, Baker, Bradford, Citrus, Clay, Columbia, Gilchrist, Lafayette, Madison, Marion, Putnum, Sumter, Suwannee, and Union)
Edited sentence: The six surveys identified or revisited over 750 archaeological sites in 15 counties (Alachua, Baker, Bradford, Citrus, Clay, Columbia, Gilchrist, Lafayette, Madison, Marion, Putnam, Sumter, Suwannee, and Union)