Deadliest Events

Can you name the events in human history that caused 10 million or more deaths?

Based on this Wikipedia article for wars, this Wikipedia article for diseases, this Wikipedia article for famines, and this Wikipedia article for the colonization of the Americas

Using the lowest estimate

There are multiple instances of the bubonic plague that must be named separately

Two answers overlap with each other, and two answers overlap with the colonization of the Americas

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Last updated: February 27, 2025

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Years	Deaths	Event
1939-1945	80,000,000	World War II (inc. Holocaust)
1492-?	~55,000,000	Diseases during the Colonization of the Americas
1981-	45,000,000	HIV/AIDS Pandemic
184-280	36,000,000	Three Kingdoms Period
1206-1368	30,000,000	Mongol Conquests
1346-1353	25,000,000	Black Death
1616-1683	25,000,000	Transition from Ming to Qing
1850-1864	20,000,000	Taiping Rebellion
1906-1907	20,000,000	Chinese Famine of 1906-1907
1937-1945	20,000,000	Second Sino-Japanese War
1914-1918	17,000,000	World War I
1918-1920	17,000,000	Spanish Flu
541-549	15,000,000	Plague of Justinian
1959-1961	15,000,000	Great Chinese Famine
755-763	13,000,000	An Lushan Rebellion
1855-1960	12,000,000	Third Plague Pandemic
1783-1784	11,000,000	Chalisa Famine
1789-1793	11,000,000	Doji Bara Famine
1519-1530	10,500,000	Spanish Conquest of Mexico
1533-1572	10,000,000	Spanish Conquest of the Inca Empire
1769-1773	10,000,000	Great Bengal Famine of 1770