On 4 August 221 Lady Zhen, the wife of Cao Pi of Wei of the Three Kingdoms, died.
10th December 1799: France adopts the metric system for weights and measures
10th December 2017
11th November 1918: WW1 Armistice of Compiègne is signed
11th November 2018
9th November 1989: East Germany opens the Berlin Wall
9th November 2017