The Roman Empire collapses and present day Italy is subjected to a series of invasions and a lack of political unity.
Until 1922, Italy is a constitutional monarchy with limited suffrage.
Aligned with the Allies in World War I, Italy gains the following territories as a result of peace treaties: Trentino, South Tyrol, and Trieste.
Fascist leader Benito Mussolini forms an axis with Nazi Germany.
Italy joins the United Nations.
Italy becomes a founding member of the European Economic Community.
Roman Catholicism loses status as Italy's state religion.
High levels of government corruption spark several years of intense investigations and arrests.
The Euro replaces the Lira as Italy's currency.