The inevitability of aging the characters. Lazarus and granny are both old Lazarus is quite aged.
Until the agricultural revolution, humans were mainly hunters and gatherers who did not raise plants or animals for food.
The two governments, support each other in a federal system. The system is that in which the governmental power is divided between the central government and the territorial subdivisions. The federal government refers to the national government of the US.
Answer:
Self Interest or self-interested.
