Italy does not have states or territories like the U.S. It is a unitary parliamentary republic divided into:
Regions have legislative powers (constitutionally defined), but no sovereignty. The central government in Rome holds supreme authority. This contrasts with federal systems (U.S., Germany, Canada) where states/provinces have constitutionally protected powers.
Italy's regions reflect historical, cultural, and linguistic diversity (e.g., South Tyrol's German-speaking autonomy), but all derive authority from the national constitution.