Five letters that changed the course of history
It’s said that the pen is mightier than the sword, and throughout history letters have been known to cause scandal, alter the course of wars and inspire social movements.
From a letter that led to a British queen's execution to one that set the US on a course to developing the atomic bomb - here are five fascinating letters that have changed the course of history.
Video by Dan John
Animation by Lily Baker
Additional footage and images: Crown copyright courtesy of The National Archives, Samford University, Getty Images, Alamy.
