California became the 31st state to join the United States of America.
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Congress changed the official name from United Colonies to the United States of America.
American astronomer Edward Emerson Barnard discovered Jupiter's fifth moon.
President Lyndon B signed the National Traffic and Motor Safety Act, which set new standards for vehicles and drivers.
With a record time of 2:52:29, Armas Toivonen was the first European to win gold for a marathon at the European Athletics Championships.
The tomb of a goldsmith family dating back 3,500 years was discovered near Luxor, Egypt.
