Answer:
The Germans and Italians where humiliated because of the outcome of World War 1, for different reasons. The Germans, was on the loser side of the war. They where forced war reparations, and the give up territory full of Germans to other nations most notably to Poland, along with the lost of its colonies. The Italians where on the winning side with a huge cost of 1,160,000 casualties, yet they did not receive all the land promised to them by the British.
Needless to say these outcomes, caused huge instability in both countries, politically and economically. The dictators that rose up in these countries promised the return to greatness, an undoing of the past humiliations and their nations triumphing above all others. The people, who have been through so much, voted them in and where sucked into there lies and thus the stage for World War 2 was set.