How did regional differences contribute to continued divisions in italy after unification?

Italy is a country that has less than 200 years of history as a unified nation. Previously, the peninsula was a set of separate kingdoms, with ideologies, cultures, languages and even different ethnic components.

These differences, although they were nuanced, continued to show over the years: the north of Italy, richer, with an ethnic component similar to that of Central Europe or France, of large cities and industries; and southern Italy, more depopulated, rural and agricultural, with large Arab and Greek components.

These differences led to certain power disputes between the two groups, since the interests of these sectors have historically been very dissimilar. Even today, clashes between these political groups in Parliament are common.