World War I: The Seminal Tragedy - The Concert of Europe - Extra History - Part 1
World War I: The Seminal Tragedy - One Fateful Day in June - Extra History - Part 2
World War I: The Seminal Tragedy - The Final Act - Extra History - Part 4
World War I: The Seminal Tragedy - The July Crisis - Extra History - Part 3
World War I: The Seminal Tragedy - Lies - Extra History
Historian Reaction - Extra History's World War 1 - Part 1
Extra History's World War 1 - Part 4 (The Final Act) - Historian (*Emotional*) Reaction
Joe Reacts: Extra History WW1: The Seminal Tragedy
American Reacts to World War I: The Seminal Tragedy (Part 1)
Mr. Giant Reacts: World War I: The Seminal Tragedy The Concert of Europe Extra History #1 (REACTION)
American Reacts to World War I: The Seminal Tragedy (Part 4)
World War I: The Seminal Tragedy - The Final Act - Extra History - #4 REACTION!
World War I The Seminal Tragedy One Fateful Day in June Extra History #2 - reaction
Social Stud Reacts | World War I: The Seminal Tragedy - The Concert of Europe - Extra History - #1
Extra History's World War 1 - Part 2 (The Assassination of Franz Ferdinand) - Historian Reaction
World War I: The Seminal Tragedy - One Fateful Day in June - Extra History - #2 CG Reaction
World War I The Seminal Tragedy The Concert of Europe Extra History #1 - REACTION
Texan Reacts to World War 1: The Seminal Tragedy Pt.1 by Extra History
The Seminal Tragedy (History Short Film)
American Reacts to World War I: The Seminal Tragedy (Part 3)
