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 7 » Dreyfus affair: Émile Zola is brought to trial for libel for publishing J'Accuse…!.
June 11 » The Hundred Days' Reform, a planned movement to reform social, political, and educational institutions in China, is started by the Guangxu Emperor, but is suspended by Empress Dowager Cixi after 104 days. (The failed reform led to the abolition of the Imperial examination in 1905.)
August 11 » Spanish–American War: American troops enter the city of Mayagüez, Puerto Rico.
August 25 » Seven hundred Greek civilians, 17 British guards and the British Consul of Crete are killed by a Turkish mob in Heraklion, Greece.
September 21 » Empress Dowager Cixi seizes power and ends the Hundred Days' Reform in China.
Day of death January 31, 1920
The temperature on January 31, 1920 was between 1.1 °C and 11.2 °C and averaged 6.1 °C. There was 2.6 mm of rain. 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 2 » The second Palmer Raid, ordered by the US Department of Justice, results in 6,000 suspected communists and anarchists being arrested and held without trial.
February 10 » Józef Haller de Hallenburg performs symbolic wedding of Poland to the sea, celebrating restitution of Polish access to open sea.
February 14 » The League of Women Voters is founded in Chicago.
May 7 » Morecambe Football Club was founded during a meeting at the West View Hotel on the town's promenade.
June 15 » Following the 1920 Schleswig plebiscites, Northern Schleswig is transferred from Germany to Denmark.
November 7 » Patriarch Tikhon of Moscow issues a decree that leads to the formation of the Russian Orthodox Church Outside Russia.
When copying data from this family tree, please include a reference to the origin: Marieke Cooper, "Family tree Cooper, Kooper, Oostwal, Robert, Ooteman en Blokland", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-cooper/I892.php : accessed January 8, 2026), "Geertruida de Boer (1898-1920)".
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