Why do you think some italian people turned to mussolini in the early 1920?

1) The upset they didn't gain as much land as they wanted and the way they were treated at the treaty of Versailles. 
2) Their Italian monarchy (government) was failing them felt there weak leadership. Italy was looking for strong leader, Italy was looking for a Caesar who would solve their problems. 
3) Mussolini promised the rebuild Italy to the glory of Rome
4) Mussolini promised economic trasformation

Good luck: )