The US Postal Service was founded.
Benjamin Franklin was named the first Postmaster General.
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Italian adventurer and author Giacomo Casanova was arrested in Venice for his offensive remarks on religion.
The opera 'Parsifal' by Richard Wagner premiered in Bayreuth, Germany.
President Harry Truman signed the National Security Act.
New York became the 11th state to join the United States of America.
President Donald Trump banned transgender persons from joining the US military.
