Prussia and Russia signed the Treaty of Saint Petersburg, which ended seven years of war between the two.
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Donald Glover, known by his stage name Childish Gambino, released the music video for his single titled 'This Is America,' which went on to gain vast praise.
Alan Shepard became the first American to travel to outer space.
Bhumibol Adulyadej was crowned King of Thailand.
Eugene Bullard became the first African-American military pilot after acquiring his pilot's license from the Aéro-Club de France.
Secretariat made history when he finished the Kentucky Derby in record time.
