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Henley Royal Regatta: the village of Henley-on-Thames, on the River Thames in Oxfordshire, stages its first regatta.
The Wilkes Expedition, which would explore the Puget Sound and Antarctica, weighs anchor at Hampton Roads.
A coup in Chile, headed by General Augusto Pinochet, topples the democratically elected president Salvador Allende. Pinochet exercises dictatorial power until ousted in a referendum in 1988, staying in power until 1990.
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