World War II was the deadliest conflict in human history.
Notes on verification
Well-corroborated by multiple encyclopedic and educational sources; widely accepted historical consensus, though exact death toll estimates vary by methodology.
Sources
- World War II (en.wikipedia.org)
- https://courses.lumenlearning.com/suny-hccc-worldhistory2/chapter/casualties-of-world-war-ii/ (courses.lumenlearning.com)
- https://www.history.com/articles/world-war-ii-history (history.com)