Claudius Amyand performed the first recorded appendectomy at St George’s Hospital in London.
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US President Abraham Lincoln ordered the hanging of 39 Santee Sioux Indians.
Scientists discovered the most distant supermassive black hole.
Finland declared its independence from the Russian Empire.
The Anglo-Irish Treaty was signed.
A six-day siege began in London when an IRA unit took a couple hostage in their flat while fleeing the police.
