January 1 » New York, New York annexes land from surrounding counties, creating the City of Greater New York. The four initial boroughs, Manhattan, Brooklyn, Queens, and The Bronx, are joined on January 25 by Staten Island to create the modern city of five boroughs.
February 23 » Émile Zola is imprisoned in France after writing J'Accuse…!, a letter accusing the French government of antisemitism and wrongfully imprisoning Captain Alfred Dreyfus.
April 20 » U.S. President William McKinley signed a joint resolution to Congress for declaration of war against Spain, beginning the Spanish–American War.
June 22 » Spanish–American War: In a chaotic operation, 6,000 men of the U.S. Fifth Army Corps begins landing at Daiquirí, Cuba, about 16 miles (26km) east of Santiago de Cuba. Lt. Gen. Arsenio Linares y Pombo of the Spanish Army outnumbers them two-to-one, but does not oppose the landings.
September 13 » Hannibal Goodwin patents celluloid photographic film.
October 1 » The Vienna University of Economics and Business Administration is founded under the name k.u.k. Exportakademie.
Day of marriage June 18, 1921
The temperature on June 18, 1921 was between 6.9 °C and 15.8 °C and averaged 12.3 °C. There was 5.2 hours of sunshine (31%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north. 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.
March 20 » The Upper Silesia plebiscite was a plebiscite mandated by the Versailles Treaty to determine a section of the border between Weimar Germany and Poland.
July 22 » Rif War: The Spanish Army suffers its worst military defeat in modern times to the Berbers of the Rif region of Spanish Morocco.
September 7 » In Atlantic City, New Jersey, the first Miss America Pageant, a two-day event, is held.
September 11 » Nahalal, the first moshav in Palestine, is settled as part of a Zionist plan of creating a Jewish state, later to be Israel.
September 21 » A storage silo in Oppau, Germany, explodes, killing 500–600 people.
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/I24112.php : accessed February 9, 2026), "Hendrik de Vries (1898-????)".
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