Which opera had more acts,  Il trovatore or Attila?
Il trovatore: Il trovatore (] ; Italian for "The Troubadour") is an opera in four acts by Giuseppe Verdi to an Italian libretto largely written by Salvadore Cammarano, based on the play "El trovador" (1836) by Antonio García Gutiérrez. Attila (opera): Attila is an opera in a prologue and three acts by Giuseppe Verdi to an Italian libretto by Temistocle Solera, based on the 1809 play "Attila, König der Hunnen " ("Attila, King of the Huns") by Zacharias Werner.
Il trovatore