The first class of students graduated from the United States Naval Academy.
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Swedish authorities finally closed a 34-year-old inquiry into the murder of their prime minister.
Alcoholics Anonymous was founded in Akron, Ohio.
The Great Arab Revolt against the Ottoman Empire led by Lawrence of Arabia was initiated in Mecca.
Italy declared war on France and Britain.
In London, the Millenium Bridge closed for safety checks following large crowds, which caused the bridge to start swaying.
