In 1870 the newly formed Kingdom of Italy annexed the remaining Papal States, depriving the Pope of his temporal power. However, papal rule in Italy was later restored by the Fascist regime[7] (albeit on a greatly diminished scale) in 1929 as head of the Vatican City state;[7] under Mussolini's dictatorship, Roman Catholicism became the state religion of Fascist Italy.[7][8]