Risorgimento and Irredentism
The process of unification of the Italian people in a national State was not completed in the nineteenth century. Many Italians remained outside the borders of the Kingdom of Italy and this situation created the Italian irredentism.
Italia irredenta (Unredeemed Italy) was an Italian nationalist opinion movement that emerged after Italian unification. It advocated irredentism among the Italian people as well as other nationalities who were willing to become Italian and as a movement; it is also known as "Italian irredentism". Not a formal organization, it was just an opinion movement that claimed that Italy had to reach its "natural borders". Similar patriotic and nationalistic ideas were common in Europe in the 19th century.
Read more about this topic: Italian Unification