History Lesson: Most Devasting Military Conflicts

The 4 Most Destructive Conflicts in All of Human History
https://nationalinterest.org/blog/buzz/4-most-destructive-conflicts-all-human-history-162752

From Gemini AI:
When adjusted for global population, the Mongol conquests (13th century) and the Three Kingdoms period in China (2nd/3rd century) were far more devastating than World War II. While WWII caused 70–85 million deaths (roughly 3-4% of the population), the Mongol conquests killed an estimated 11-13% of the world population, and the Three Kingdoms era may have wiped out 13-17%.

Here are the biggest wars adjusted for global population:

• Mongol Conquests (1200–1300): Estimated to have killed 20-60 million, representing roughly 5-13% of the world population at the time.
• Three Kingdoms Period (220–280): This conflict claimed roughly 34 million lives, equivalent to roughly 13-17% of the global population.
• The An Lushan Rebellion (755–763): Estimates suggest this conflict killed up to 16% of the world's population.
• Taiping Rebellion (1850–1864): An extremely violent civil war in China, which caused 20-70 million deaths, or about 1.4-2.6% of the world population.

While World War II remains the deadliest in absolute numbers (highest total death count), these earlier conflicts were far more catastrophic relative to the smaller total number of people living at those times.