4. how did an overdependence on mercenary soldiers lead to the gradual decline of
the western roman empire?
a. mercenaries were not given roman armor and weaponry.
b. mercenaries were more expensive than regular soldiers.
c. mercenaries were not trained in roman military tactics.
d. mercenaries had little loyalty to the roman empire.

Which of these is not a criticism of the concentric zone model? it does not accurately describe cities after the rise of suburban development. it only applies to cities that grew after the development of the automobile. it assumes that inner-city areas will always be repurposed instead of abandoned. it places too much importance on the traditional central business district.