January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
April 15 » Philippine–American War: Filipino guerrillas launch a surprise attack on U.S. infantry and begin a four-day siege of Catubig, Philippines.
May 17 » Second Boer War: British troops relieve Mafeking.
June 20 » Boxer Rebellion: The Imperial Chinese Army begins a 55-day siege of the Legation Quarter in Beijing, China.
June 25 » The Taoist monk Wang Yuanlu discovers the Dunhuang manuscripts, a cache of ancient texts that are of great historical and religious significance, in the Mogao Caves of Dunhuang, China.
October 9 » The Cook Islands become a territory of the United Kingdom.
Day of death June 23, 1901
The temperature on June 23, 1901 was between 12.8 °C and 22.0 °C and averaged 17.8 °C. There was 10.2 hours of sunshine (61%). Source: KNMI
March 23 » Emilio Aguinaldo, only President of the First Philippine Republic, was captured at Palanan, Isabela by the forces of General Frederick Funston.
July 4 » William Howard Taft becomes American governor of the Philippines.
August 14 » The first claimed powered flight, by Gustave Whitehead in his Number 21.
September 7 » The Boxer Rebellion in Qing dynasty (modern-day China) officially ends with the signing of the Boxer Protocol.
October 12 » President Theodore Roosevelt officially renames the "Executive Mansion" to the White House.
December 12 » Guglielmo Marconi receives the first transatlantic radio signal (the letter "S" [***] in Morse Code), at Signal Hill in St John's, Newfoundland.
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/I90299.php : accessed September 29, 2026), "Willem Slopsema (1900-1901)".
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