Why were Italian nationalist outraged?

Answer 1

Italian nationalists were outraged primarily due to the perceived failure of the 1919 Treaty of Saint-Germain, which did not grant Italy all the territories it had been promised after World War I, particularly areas with significant Italian populations like Fiume. This betrayal fueled a sense of disillusionment and anger, as many believed they had fought for a "mutilated victory." Nationalist sentiments were further exacerbated by economic difficulties and social unrest in the post-war period, leading to a rise in extremist movements. The frustration over unfulfilled national aspirations contributed to the eventual rise of fascism in Italy.