The Lewis and Clark Expedition began its journey home, having crossed the western United States.
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10th December 1799: France adopts the metric system for weights and measures
10th December 2017
23rd March 2019
23rd March 1806: The Lewis and Clark Expedition begins its return journey
11th November 1918: WW1 Armistice of Compiègne is signed
11th November 2018
9th November 1989: East Germany opens the Berlin Wall
9th November 2017