Italy is a sovereign state.
The Big Four , also known as G4 or EU4 , refers to France , Germany , Italy and the United Kingdom . The eurozone , officially called the euro area , is a monetary union of 19 of the 28 European Union ( EU ) member states which have adopted the euro as their common currency and sole legal tender . The Human Development Index ( HDI ) is a composite statistic of life expectancy , education , and per capita income indicators , which are used to rank countries into four tiers of human development . Italy . It has a very high level of human development and is ranked sixth in the world for life expectancy . A unitary state is a state governed as a single power in which the central government is ultimately supreme and any administrative divisions ( sub-national units ) exercise only the powers that the central government chooses to delegate .