How was Naples different from the other Italian city-states? It did not focus on agriculture.
It rejected feudalism altogether.
It did not have a large professional middle class.
It was protected from foreign influence.

C. it did not have a large professional middle class

Explanation:

the language dates from the contacts of arabian traders with the inhabitants of the east coast of africa over many centuries. under arab influence, swahili originated as a lingua franca used by several closely related bantu-speaking tribal groups.