The Papal State as a Great Power?

Is it at all possible? I hope so because that would be a badass TL. Especially if the Papacy and Ottomans get into a bunch of wars with each other. How big of a Papal State could we realistically expect to see?
 
Is it at all possible? I hope so because that would be a badass TL. Especially if the Papacy and Ottomans get into a bunch of wars with each other. How big of a Papal State could we realistically expect to see?

If you consider influence and not territory, it was a great power until at least Westphalia, I should say.
 
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