Wyoming became the 44th state to join the United States of America.
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NASA launched Telstar 1, the world's first active communications satellite.
Aviator Howard Hughes started his around-the-world flight.
Lady Jane Grey began her 9-day reign as the Queen of England, France, and Ireland.
A chemical factory in Seveso, near Milan, Italy, exploded, covering surrounding areas in dioxin.
Louis XVI of France declared war on Great Britain during the American Revolution.
