19. Erosion of the empire's power combined with rapid urban growth, in Italy during and after the Gregorian Age, which created republics that were truly independent. (A) No change (B) The combination of erosion of the empire's power and rapid urban growth, which in Italy during and after the Gregorian Age, (C) Erosion of the empire's power, in Italy during and after the Gregorian Age, combined with rapid urban growth, which (D) In Italy, the combination of erosion of the empire's power and rapid urban growth, during and after the Gregorian Age,