Complex sentence: In 1875 the producer Richard D'Oyly Carte reunited Gilbert and Sullivan to create a one-act piece, "Trial by Jury", which was a box-office success, and led to a series of twelve full-length comic operas by the collaborators.
Split into simpler sentences: In 1875 the producer Richard D'Oyly Carte reunited Gilbert and Sullivan to create a one-act piece, "Trial by Jury". Its box-office success led to a series of twelve full-length comic operas by the collaborators.