The US signed the Equal Pay Act to reduce the difference in pay between sexes.
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The Great Arab Revolt against the Ottoman Empire led by Lawrence of Arabia was initiated in Mecca.
Alcoholics Anonymous was founded in Akron, Ohio.
The Opportunity Mars rover sent its last signal to Earth.
In London, the Millenium Bridge closed for safety checks following large crowds, which caused the bridge to start swaying.
Swedish authorities finally closed a 34-year-old inquiry into the murder of their prime minister.
