I would say its because no one really decided to change anything. No one during the old ages really knew how to do anything and only used what they had and what was closest to them.
C. Kush was the group of people that broke free of Egyptian rule, who later established the city of Meroe along the Nile River.
I think that its either constitutional law or rule of law
I think it is empowered because someone else is feeding off the idea of the government having more power.