The Treaty of Ried was signed between Bavaria and Austria.
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Pioneer Venus Orbiter, or Pioneer 12, sent its last transmission as it fell from its orbit around Venus.
John Lennon's most iconic hit, 'Imagine,' was released in the UK.
Wisconsin was struck by the deadliest wildfire in US history.
Isabella of Angoulême was crowned Queen consort of England at Westminster Abbey, London.
The Franklin National Bank closed due to fraud, the largest US bank to fail at the time.
