Question: what is the saddest event in history?
Answer: Pol Pot's Regime (1975-1979) 1.5-2 million death. ... 
Irish Potato Famine (1845-1849) 1 million death. ... 
Nanking Massacre (1937-1938) 300,000 Death. ... 
The Rwandan Genocide(1994) 1million death. ... 
The Great Leap Forward (1958-1962) 45million death.