January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
February 7 » Second Boer War: British troops fail in their third attempt to lift the Siege of Ladysmith.
May 17 » Second Boer War: British troops relieve Mafeking.
June 9 » Indian nationalist Birsa Munda dies of cholera in a British prison.
July 2 » Jean Sibelius' Finlandia receives its première performance in Helsinki with the Helsinki Philharmonic Society conducted by Robert Kajanus.
December 19 » Hopetoun Blunder: The first Governor-General of Australia John Hope, 7th Earl of Hopetoun, appoints Sir William Lyne premier of the new state of New South Wales, but he is unable to persuade other colonial politicians to join his government and is forced to resign.
Day of death May 25, 1900
The temperature on May 25, 1900 was about 11.2 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 92%. Source: KNMI
January 16 » The United States Senate accepts the Anglo-German treaty of 1899 in which the United Kingdom renounces its claims to the Samoan islands.
February 6 » The Permanent Court of Arbitration, an international arbitration court at The Hague, is created when the Senate of the Netherlands ratifies an 1899 peace conference decree.
May 18 » The United Kingdom proclaims a protectorate over Tonga.
May 22 » The Associated Press is formed in New York City as a non-profit news cooperative.
June 18 » Empress Dowager Cixi of China orders all foreigners killed, including foreign diplomats and their families.
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.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I137546.php : accessed October 19, 2026), "Theunis Miedema (1900-1900)".
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