Complex sentence: In later years "Battaglia" was given under different settings and different titles until Italian unification allowed for the opera to be presented as originally written, although we know that Verdi considered revising it in the 1850s, but never did.
Split into simpler sentences: In later years "Battaglia" was given under different settings and different titles until Italian unification allowed for the opera to be presented as originally written. We know that Verdi considered revising it in the 1850s, but never did.