The printing press and the guillotine.
So the guillotine (15th century [1]) and printing press (invented in 1440) [2] precipitated the French Revolution (1789)[3]?
It’s a theory for sure.
[1] https://en.wikipedia.org/wiki/Guillotine
[2] https://en.wikipedia.org/wiki/Printing_press
[3] https://en.wikipedia.org/wiki/French_Revolution
Before that they didn't know how to kill people?
Yes. Before that they didn't know how to kill people.
So the guillotine (15th century [1]) and printing press (invented in 1440) [2] precipitated the French Revolution (1789)[3]?
It’s a theory for sure.
[1] https://en.wikipedia.org/wiki/Guillotine
[2] https://en.wikipedia.org/wiki/Printing_press
[3] https://en.wikipedia.org/wiki/French_Revolution
Before that they didn't know how to kill people?
Yes. Before that they didn't know how to kill people.