Italy is known for its unstable government. What are the factors that contribute to the instability of the Italian system?

Italian politics was largely dominated by two aspects, i.e., Catholicism and communism. In spite of having the right, left, and center, some label the previous era as the two red years.

The system of Italy was not always stable; post the war era, the savings of Italy were almost gone and were worthless coupled with the bankruptcy on the part of industries that further boosted the country's unemployment rates.