Béla I was crowned king of Hungary.
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Finland declared its independence from the Russian Empire.
Taylor Swift was named Time Magazine's Person of the Year.
James Cameron's Avatar: The Way of the Water premiered in London.
A first edition of 'The Birds of America' by John James Audubon was auctioned at Sotheby's, London, England, for £7,321,250 ($10 million) – which took the record for any book at auction.
The Anglo-Irish Treaty was signed.
