May 1 » Spanish–American War: Battle of Manila Bay: The Asiatic Squadron of the United States Navy destroys the Pacific Squadron of the Spanish Navy after a seven-hour battle. Spain loses all seven of its ships, and 381 Spanish sailors die. There are no American vessel losses or combat deaths.
June 17 » The United States Navy Hospital Corps is established.
June 21 » The United States captures Guam from Spain. The few warning shots fired by the U.S. naval vessels are misinterpreted as salutes by the Spanish garrison, which was unaware that the two nations were at war.
June 27 » The first solo circumnavigation of the globe is completed by Joshua Slocum from Briar Island, Nova Scotia.
July 3 » A Spanish squadron, led by Pascual Cervera y Topete, is defeated by an American squadron under William T. Sampson in the Battle of Santiago de Cuba.
August 25 » Seven hundred Greek civilians, 17 British guards and the British Consul of Crete are killed by a Turkish mob in Heraklion, Greece.
Day of marriage April 21, 1921
The temperature on April 21, 1921 was between 2.5 °C and 11.2 °C and averaged 6.7 °C. There was 0.6 mm of rain. There was 2.5 hours of sunshine (18%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. 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 9 » Greco-Turkish War: The First Battle of İnönü, the first battle of the war, begins near Eskişehir in Anatolia.
February 25 » Georgian capital Tbilisi falls to the invading Russian forces after heavy fighting and the Russians declare the Georgian Soviet Socialist Republic.
March 21 » The New Economic Policy is implemented by the Bolshevik Party in response to the economic failure as a result of war communism.
March 24 » The 1921 Women's Olympiad begins in Monte Carlo, first international women's sports event.
July 23 » The Communist Party of China (CPC) is established at the founding National Congress.
September 7 » In Atlantic City, New Jersey, the first Miss America Pageant, a two-day event, is held.
When copying data from this family tree, please include a reference to the origin: J. den Nieuwenboer, "Family tree Den Nieuwenboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-den-nieuwenboer/I10486.php : accessed May 13, 2025), "Martinus Pool (1898-????)".
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