Which of Rome's three heirs, Byzantium, Islam, or Latin Christendom, what most important? Why?

disequilibrium means that either supply is greater than the demand for an available good, or that the demand for a product outstrips the available supply. it implies that the price for a is either too low creating large demand, or too high creating a large surplus of supply.

a stronger central government  

its what they are

the allies' desire to seek retribution for germany's actions

c or d. good luck !