Which best shows how egypt became an empire?

The Egyptian Empire rose during the period of the New Kingdom (c. 1570- c. 1069 BCE), when the country reached its height of wealth, international prestige, and military might. The empire stretched from modern-day Syria in the north to modern-day Sudan in the south and from the region of Jordan in the east to Libya in the west. Since the empire rose and fell in the course of the New Kingdom, historians refer to the period as either the New Kingdom or the Egyptian Empire interchangeably.

the answer is b: an economic crisis throughout the country.