The correct answer is B) by providing more labor resources.
Empire-building benefited farm production by providing more labor resources.
Empire-building allowed the Emperors to expand their territories conquering new lands and having more servants to serve the king. This also meant having more labor resources, more hands ready to work in the farm fields to grow more crops, to produce more food for the empíre and trading purposes. Better crops and food production meant more trade, and more trade translated into more income and resources for the empire.
They don't teach it enough perhaps ?
The lack of natural resources affected Mesopotamians because of no wood they had to make their homes out of mud bricks which did not hold up well. Also because they had no mountains or natural barriers they were often invaded. They had to make walls out of mud too. They were able to trade with the surplus of grain they grew for things that they needed.
The Greco-Persian Wars (also often called the Persian Wars) were a series of conflicts between the Achaemenid Empire and Greek city-states that started in 499 BC[i] and lasted until 449 BC. The collision between the fractious political world of the Greeks and the enormous empire of the Persians began when Cyrus the Great conquered the Greek-inhabited region of Ionia in 547 BC. Struggling to control the independent-minded cities of Ionia, the Persians appointed tyrants to rule each of them. This would prove to be the source of much trouble for the Greeks and Persians alike.
