That's easy they were slaves they got work done
Answer:
B. Nomadic ways of life.
Explanation:
With a food surplus groups of nomads were able to settle in one location instead of moving from location to location following herds of animals or slash-and-burn farming.
Egypt was definitely at a high note at that point but Babylon was very wealthy, Assyria was lower than Persia so I'd say Egypt, Babylon, Persia, then Assyria
Easy escape from potential threats
