January 23 » Second Boer War: The Battle of Spion Kop between the forces of the South African Republic and the Orange Free State and British forces ends in a British defeat.
January 24 » Second Boer War: Boers stop a British attempt to break the Siege of Ladysmith in the Battle of Spion Kop.
April 2 » The United States Congress passes the Foraker Act, giving Puerto Rico limited self-rule.
June 20 » Baron Eduard Toll, leader of the Russian Polar Expedition of 1900, departs Saint Petersburg in Russia on the explorer ship Zarya, never to return.
June 20 » Boxer Rebellion: The Imperial Chinese Army begins a 55-day siege of the Legation Quarter in Beijing, China.
October 19 » Max Planck discovers Planck's law of black-body radiation.
When copying data from this family tree, please include a reference to the origin: Arjan de Jong, "Family tree De Boorder, Leusink, De Jong, Bakkum", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-boorder/I94378978.php : accessed June 19, 2024), "Maria Blankert (1863-1900)".
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