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Postal System Established
U.S. Postal System established by the Second Continental Congress, -
Benedict Arnold commits treason
Benedict Arnold is given command of West Point, Arnold contacted Sir Henry Clinton, and gave him the idea of handing over West Point and his men. On September 21 of that year, Arnold met with Major John Andre and made his promise. -
First Travel by Air
Jean-Pierre Blanchard and John Jeffries travel from Dover, England, to Calais, France, in a gas balloon. They are the first to cross the English Channel by air. -
Benjamin Franklin Dies
Benjamin Franklin dies in Philadelphia at age 84. He has a big funeral. -
Smallpox Vaccine Tested
Edward Jenner, an English doctor, administers the world's first vaccination to prevent smallpox. Which had killed millions of people. -
Rosetta Stone Found
The Rosetta stone was found on this date. The stone contained fragments of passages written in three different scripts: Greek, Egyptian hieroglyphics and Egyptian demotic. It lead to translations and understandings of other cultures.