A. - yes, you need to feed the empire!
B. - yes, you need to defend the empire!
C. - yes, you need to govern the empire!
D. - no, this would actually be detrimental to the empire, revolts would be rather bad than good for it.
There were more goods than wants for them
Hammurabi's well-disciplined army of Foot soldiers used axes, spears, and copper or bronze daggers to divide and conquer opponents one by one.