Big Brain History
Browse reaction videos from Big Brain History, including originals they reacted to, recent uploads, and tracked reaction activity on ReactionFinder.
1.7K subscribers3 reactions3 originalsLatest tracked Jul 16, 2026
16:01
🎬 The Worst Time in History to Be Born as a Human | History Teacher Reacts
555Oct 22, 2025
Watch Reaction↓ REACTING TO
8:09
The Worst Time in History to Be Born as a Human
Barely Evolved • 7.2M
↓ REACTING TO
15:20
Sieging Castles SUCKS actually...
Historically • 1.7M
23:26
🎬 423 Years of American History in 13 Minutes | History Teacher Reacts
75Oct 20, 2025
Watch Reaction↓ REACTING TO
12:45
423 Years of American History in 13 Minutes
Fun History • 7.1M