January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
February 23 » Second Boer War: During the Battle of the Tugela Heights, the first British attempt to take Hart's Hill fails.
March 18 » AFC Ajax Amsterdam, The Netherlands's biggest and most successful football club, was founded.
May 23 » American Civil War: Sergeant William Harvey Carney is awarded the Medal of Honor for his heroism in the Assault on the Battery Wagner in 1863.
June 9 » Indian nationalist Birsa Munda dies of cholera in a British prison.
July 27 » Kaiser Wilhelm II makes a speech comparing Germans to Huns; for years afterwards, "Hun" would be a disparaging name for Germans.
Day of death May 20, 1900
The temperature on May 20, 1900 was about 12.2 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 65%. Source: KNMI
April 30 » Hawaii becomes a territory of the United States, with Sanford B. Dole as governor.
May 17 » Second Boer War: British troops relieve Mafeking.
May 17 » The children's novel The Wonderful Wizard of Oz, by L. Frank Baum, is first published in the United States. The first copy is given to the author's sister.
July 2 » The first Zeppelin flight takes place on Lake Constance near Friedrichshafen, Germany.
July 9 » The Federation of Australia is given royal assent.
October 25 » The United Kingdom annexes the Transvaal.
When copying data from this family tree, please include a reference to the origin: Hein Bense, "Family tree Bense", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-bense/I1609.php : accessed March 15, 2026), "Cornelis Karel Otto (1900-1900)".
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