Answer:
20. <u> Camillo di Cavour</u> Worked to bring about the unification of Italy.
*I can't see the options for 21*
A need for productive workers.
Ethiopia was the only African nation that was not colonized, the Ethiopian forces successfully defeated the Italians during the battle of Adowa which was led by Menelik the second. This helped the nation kept their independent.Unlike other African nation Ethiopia had strong military force and huge sense of nationalism which made their resistance successful.
It was Sunni Islam I told you already