January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
January 31 » Datu Muhammad Salleh is killed in Kampung Teboh, Tambunan, ending the Mat Salleh Rebellion.
February 14 » British forces begin the Battle of the Tugela Heights in an effort to lift the Siege of Ladysmith.
May 18 » The United Kingdom proclaims a protectorate over Tonga.
June 5 » Second Boer War: British soldiers take Pretoria.
October 25 » The United Kingdom annexes the Transvaal.
Day of marriage February 19, 1921
The temperature on February 19, 1921 was between -1.0 °C and 9.2 °C and averaged 4.6 °C. There was 7.9 hours of sunshine (78%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-northeast. 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.
February 12 » Bolsheviks launch a revolt in Georgia as a preliminary to the Red Army invasion of Georgia.
March 18 » The Kronstadt rebellion is suppressed by the Red Army.
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.
March 24 » The 1921 Women's Olympiad begins in Monte Carlo, first international women's sports event.
July 11 » The Red Army captures Mongolia from the White Army and establishes the Mongolian People's Republic.
October 29 » United States: Second trial of Sacco and Vanzetti in Boston, Massachusetts.
Day of death May 31, 1974
The temperature on May 31, 1974 was between 7.2 °C and 11.9 °C and averaged 10.0 °C. There was 6.1 mm of rain during 2.2 hours. There was -0.1 hours of sunshine (0%). The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
February 23 » The Symbionese Liberation Army demands $4 million more to release kidnap victim Patty Hearst.
March 8 » Charles de Gaulle Airport opens in Paris, France.
April 6 » The Swedish pop band ABBA wins the Eurovision Song Contest with the song "Waterloo", launching their international career.
August 4 » A bomb explodes in the Italicus Express train at San Benedetto Val di Sambro, Italy, killing 12 people and wounding 22.
August 5 » Vietnam War: The U.S. Congress places a $1billion limit on military aid to South Vietnam.
December 19 » Nelson Rockefeller is sworn in as Vice President of the United States under President Gerald Ford under the provisions of the 25th Amendment to the United States Constitution.
When copying data from this family tree, please include a reference to the origin: Elly Gelderman, "Family tree Gelderman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-gelderman/I5016.php : accessed January 30, 2026), "Arend Remmers (1900-1974)".
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