what could well happen is that he ider dies nelle lontane americe or the events of the second unification war like the march of the thousand get butterflyed away
arguably this was the main reason there is an Italy, even if there would be more wars later and possibly Napoli would still fall, there could be later a break up similar to the last yugoslavian war, especially if the unification happens later, closer to the 1900eds, wich could be if theres no garibaldi and his thousand redshirts
this could then afect the 20th century in ways that are too numerous for one thread