Charles Darwin, who taught the world the theory of evolution by natural selection, died at 73 years old.
Source
Grace Kelly married Rainier III, the Prince of Monaco.
NASA's Ingenuity helicopter became the first helicopter to fly on another planet.
The Treaty of Frankfurt was signed between Holy Roman Emperor Charles V and Protestants.
The Roman Catholic Church declared Joan of Arc a saint.
Prolific killer Charles Manson was sentenced to death by gas chamber.
