The Italian unification questions were tricky! I did the one on the defeat of Austria. Basically concluded that it wasn't of massive importance because France seemed to replace Austria as the influential power and barrier to full unification (Nice & Savoy, Rome, Italy getting Venetia - all aspects that France had control over) and that it took Garibaldi to create an Italy that would bear the most resemblance to what we think an 'Italy' is (i.e. control of most of the peninsula, north and south).