Which statement best explains how classical civilizations developed out of
the first agricultural societies?
A. The improvements in productivity in early agricultural societies
enabled more complex societies to develop.
B. The need for population control in rapidly growing agricultural
societies led to important changes in political and religious
doctrines.
C. Increases in food production allowed early agricultural societies to devote most of their resources to food production,
D. The need to defend surplus food supplies and permanent
settlements provided incentives to develop greater military power