What is the deadliest natural disaster in history?

Related questions

1. Which countries have the most earthquakes?
2. What are the 5 effects of earthquakes?
3. What are the negatives of earthquakes?
4. How bad is a 7.0 earthquake?
5. Was there an earthquake today in New York?
6. When did NYC have an earthquake?
7. How do earthquakes cause damage?
8. What are the effects of earthquake on human life?
9. What damage do earthquakes cause?
10. Was there ever an earthquake in NYC?

Tags

1. #central
2. #august
3. #mingled
4. #natural
5. #likely
6. #floods
7. #yangtze
8. #spring
9. #china
10. #rains
11. #history
12. #heavy
13. #disaster
14. #banks
15. #river
16. #deadliest
17. #overtopped