How can there be a different North-South divide for Italy?

How can there be a different North-South divide for Italy? How can Italy's north be more Catholic than the South like in Spain. Both countries have a Catholic North and atheist south. How can Northern Italy be the center of Catholicism in Italy and how can the urban working class think differently than the rural areas. In Spain, it was like that. How can a more prosperous North with equal land distribution would lead it to be the center of Catholicism just like in Spain?
 
After 1900, that's incredibly hard to do. The North is just much closer to the positivist, materialist ideas of Central and Northern Europe than the South is.
 
How can there be a different North-South divide for Italy? How can Italy's north be more Catholic than the South like in Spain. Both countries have a Catholic North and atheist south. How can Northern Italy be the center of Catholicism in Italy and how can the urban working class think differently than the rural areas. In Spain, it was like that. How can a more prosperous North with equal land distribution would lead it to be the center of Catholicism just like in Spain?
What if one part becomes Protestant ?
 
How can there be a different North-South divide for Italy? How can Italy's north be more Catholic than the South like in Spain. Both countries have a Catholic North and atheist south. How can Northern Italy be the center of Catholicism in Italy and how can the urban working class think differently than the rural areas. In Spain, it was like that. How can a more prosperous North with equal land distribution would lead it to be the center of Catholicism just like in Spain?
You could have a more muslim italy with more sucessful ottomans but that is a massive butterfly itself.
 
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