January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
April 14 » The Exposition Universelle begins.
June 17 » Boxer Rebellion: Western Allied and Japanese forces capture the Taku Forts in Tianjin, China.
June 18 » Empress Dowager Cixi of China orders all foreigners killed, including foreign diplomats and their families.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
December 18 » The Upper Ferntree Gully to Gembrook, Victoria Narrow-gauge (2ft 6 in or 762mm) Railway (now the Puffing Billy Railway) in Victoria, Australia is opened for traffic.
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The Family tree Steenhagen publication was prepared by J. Steenhagen (contact is not possible).
When copying data from this family tree, please include a reference to the origin: J. Steenhagen, "Family tree Steenhagen", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-steenhagen/I2163.php : accessed January 24, 2026), "Jantje Ilbrink (1900-)".
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