April 2 » The United States Congress passes the Foraker Act, giving Puerto Rico limited self-rule.
June 5 » Second Boer War: British soldiers take Pretoria.
June 18 » Empress Dowager Cixi of China orders all foreigners killed, including foreign diplomats and their families.
July 27 » Kaiser Wilhelm II makes a speech comparing Germans to Huns; for years afterwards, "Hun" would be a disparaging name for Germans.
August 16 » The Battle of Elands River during the Second Boer War ends after a 13-day siege is lifted by the British. The battle had begun when a force of between 2,000 and 3,000 Boers had surrounded a force of 500 Australians, Rhodesians, Canadians and British soldiers at a supply dump at Brakfontein Drift.
October 19 » Max Planck discovers Planck's law of black-body radiation.
Day of marriage December 11, 1924
The temperature on December 11, 1924 was between -3.6 °C and -1.8 °C and averaged -2.9 °C. There was 0.2 mm of rain. The average windspeed was 1 Bft (weak wind) and was prevailing from the south east. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 14 » The Computing-Tabulating-Recording Company changes its name to International Business Machines Corporation (IBM).
March 25 » On the anniversary of Greek Independence, Alexandros Papanastasiou proclaims the Second Hellenic Republic.
June 2 » U.S. President Calvin Coolidge signs the Indian Citizenship Act into law, granting citizenship to all Native Americans born within the territorial limits of the United States.
June 10 » Fascists kidnap and kill Italian Socialist leader Giacomo Matteotti in Rome.
September 9 » Hanapepe massacre occurs on Kauai, Hawaii.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I360804.php : accessed February 16, 2026), "Klaas Kreeft (1900-)".
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