Complex sentence: In 1879 he became a member of the law firm (later a publishing house) of J.F. Hill & Co.Augusta, ME, and he was active in many railroad, steamship, telephone, and banking enterprises.
Split into simpler sentences: In 1879 he became a member of the law firm (later a publishing house) of J.F. Hill & Co. in Augusta, Maine. He was active in many railroad, steamship, telephone, and banking enterprises.