The ancient and modern societies

Among the ancient and modern societies Diamond analyzes in Collapse, choose one from each group (i.e., one ancient and one modern) where the two societies confronted similar environmental challenges (e.g., deforestation, soil degradation, water quality/availability, climate change, etc.). Discuss the nature of the problems they confronted and compare how the two societies reacted to their crisis, as well as whether or not collapse occurred or is likely to occur.