The US signed the Equal Pay Act to reduce the difference in pay between sexes.
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The last episode of David Lynch's original Twin Peaks aired.
Italy declared war on France and Britain.
NASA's Explorer 49 was launched into Earth's orbit to research long-range radio waves within the Milky Way.
The Great Arab Revolt against the Ottoman Empire led by Lawrence of Arabia was initiated in Mecca.
Swedish company Saab, previously known for making aircraft, produced their first automobile.