Why did conflict in italy continue even after unification?

Even after the unification, that gradually happened between 1815-1871, the conflict still continued mainly because of quite major regional and ethnic differences. Since Italy was separated for quite a long time, different traditions, views on politics, and much more appeared within these societies. If you take a closer look at the image below, you will see how many different societies lived separately. You could only imagine how diverse that area was.

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