Modern Day Papal States?

Is there anyway to have the papal states to survive to today? And No i dont mean the Vatican i mean a fair sized nation? If the Bonepartes (Napoelon III) remain in power would france still back it? Maybe a POD where Rome is attacked earlier? What effects would this have on italian unification? Could there still be a somewhat unified italy minus papal states? Bonus points if you can have the POD after the third italian war of independence.

Also I was thinking, could Giuseppe Garibaldi instead of invading two siciles attack instead the kingdom of sardinia with his red shirts after the sardinians agree to sell his home city of Nice to france (which they did)? Would france avoid the fight and give it up? Would Giuseppe Garibaldi manage to take over the Sardinia kingdom with or without french aid? If he takes over would he march south and take rome? After would France (and maybe austria or spain) declare war on him and reinstate the papal states?

Also could we see a French Northern italy? Also would two sicilies remain at peace with the pope? or would they try to take it?
 
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