January 1 » Nigeria becomes a British protectorate.
February 15 » The association football club Alianza Lima is founded in Lima, Peru, under the name Sport Alianza.
February 20 » The legislature of Hawaii Territory convenes for the first time.
May 9 » Australia opens its first national parliament in Melbourne.
September 7 » The Boxer Rebellion in Qing dynasty (modern-day China) officially ends with the signing of the Boxer Protocol.
December 12 » Guglielmo Marconi receives the first transatlantic radio signal (the letter "S" [***] in Morse Code), at Signal Hill in St John's, Newfoundland.
Day of marriage March 30, 1921
The temperature on March 30, 1921 was between 2.1 °C and 9.7 °C and averaged 5.5 °C. There was 1.6 mm of rain. There was 5.6 hours of sunshine (44%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 20 » The British K-class submarine HMS K5 sinks in the English Channel; all 56 on board die.
March 18 » The second Peace of Riga is signed between Poland and the Soviet Union.
March 31 » The Royal Australian Air Force is formed.
July 23 » The Communist Party of China (CPC) is established at the founding National Congress.
September 8 » Margaret Gorman, a 16-year-old, wins the Atlantic City Pageant's Golden Mermaid trophy; pageant officials later dubbed her the first Miss America.
October 5 » The World Series is the first to be broadcast on radio.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I9802.php : accessed March 15, 2026), "Jacoba Terluin (1901-)".
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