1. Central China Floods (1931)
The Central China Floods of 1931 is considered by many as one of the biggest natural disasters in human history and for good reason. The disaster killed up to 3.7 million people in China and affected many more.
The disaster was caused by a combination of many things. From intense rainfall, extreme cyclone activity, as well as thawed ice and snow because of a long winter. All these made the Yangtze River overflow, resulting in a series of floods.
By the end of it all, drowning, disease and/or starvation had taken the lives of 3.7 million people. It’s also estimated that the floods affected about 51 million people, or about a fourth of China’s population back then.