On the 21st December 1913, the first modern crossword puzzle was printed in the New York World newspaper.
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10th December 1799: France adopts the metric system for weights and measures
10th December 2017
21st December 2017
21st December 1913: First modern crossword puzzle printed
11th November 1918: WW1 Armistice of Compiègne is signed
11th November 2018
9th November 1989: East Germany opens the Berlin Wall
9th November 2017