AP World History

Answer - B - The main reason for the high drop in population in both China and Egypt during the mid-1300s was disease.

Key Takeaway: The Black Death, otherwise known as the bubonic plague, was a world-wide pandemic that occurred in the 1300s. This plague caused the populations of Western Europe, China, and Egypt to decrease dramatically. Although this same time period experienced its great share of warfare, famine, and invasion, none impacted populations as much as disease.