Why did the italians feel that they had been deceived by the treaty of versailles

Why did the Italians feel that they had been deceived by the treaty of Versailles

The Italians felt that they were deceived by the Treaty of Versailles. It is because after the First World War, they expected to gain some territories of Germany and Turkey but according to the terms of the Treaty, they received only Southern Tyrol and Trentino ad the coastal region of Dalmatia.