In ancient times there were nomadic communities that moved from one place to another in search of favorable living conditions, from which they took advantage until the fruits were finished, and all the animals of the place were hunted, then they moved again. After the discovery of agriculture, these communities established in a single place where they could plant shrubs and trees from which they obtained food, that is, agriculture was an important factor for the formation of early cities and villages. So, the correct answer is B. Ability to grow.
Because of the economic instability that took place due to the treaty of versailles. As well as resentment for the Western powers such as Britain. Mussolini used this resentment that Italian people had for the British to gain power as the Italians did not gain the land they were promised.