There have been three agricultural revolutions, each with a unique geographic impact. A. Describe the important agricultural changes that occurred during each revolution.
B. For each revolution, discuss one way that the revolution impacted the population.
C. For any one of the revolutions, identify the impact of that revolution on food production in its respective time period and explain why that change occurred.

d. stage 4

explanation:

the existence of some kind of demographic transition is widely accepted in the social sciences because of the well-established historical correlation linking dropping fertility to social and economic development.[1] scholars debate whether industrialization and higher incomes lead to lower population, or whether lower populations lead to industrialization and higher incomes. scholars also debate to what extent various proposed and sometimes inter-related factors such as higher per capita income,lower mortality, old-age security, and rise of demand for human capital are involved.[2]