aohs officially ended in 31 BC when the early Roman Empire conquered Egypt and made it a province.РSimiliarities between the Two Cultures:РBoth were dependent on rivers and the rich soil deposited be periodic floods;?Both had to develop and anized systems of irrigation and flood control;?Both eventually had powerful kings and a priestly caste;?Both believed in all-powerful gods who played an active role in the world.РDifference between the Two Cultures:РMesopotamia was not as well protected geographically as Egypt and was thus more open to attack;?The rivers Trigris and Euphrates were not as navigable, nor were the floods as regular as the Nile’s;?So the culture of Mesopotamis reflected a sense of instability and pessimism parison to the stability and optimism that characterized Egyptians.