Analyze the effect that plentiful harvests had on population in the ancient civilizations of the mainland's river valleys. Write a one-paragraph answer. Plz help me with this, i dont understand.
Please answer these questions. Your answers will form the basis for your paragraph.
What is a plentiful harvest?
What happens to the people when there is not a plentiful harvest?
Why are there usually plentiful harvests in river valleys?