April 25 » Spanish–American War: The United States declares war on Spain.
June 27 » The first solo circumnavigation of the globe is completed by Joshua Slocum from Briar Island, Nova Scotia.
August 13 » Spanish–American War: Spanish and American forces engage in a mock battle for Manila, after which the Spanish commander surrendered in order to keep the city out of Filipino rebel hands.
November 5 » Negrese nationalists revolt against Spanish rule and establish the short-lived Republic of Negros.
November 10 » Beginning of the Wilmington insurrection of 1898, the only instance of a municipal government being overthrown in United States history.
December 10 » Spanish–American War: The Treaty of Paris is signed, officially ending the conflict.
Day of marriage July 10, 1920
The temperature on July 10, 1920 was between 8.7 °C and 19.8 °C and averaged 15.2 °C. There was 9.8 hours of sunshine (59%). The average windspeed was 3 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 16 » Zeta Phi Beta Sorority Incorporated was founded on the campus of Howard University.
February 14 » The League of Women Voters is founded in Chicago.
August 25 » Polish–Soviet War: Battle of Warsaw, which began on August 13, ends with the Red Army's defeat.
August 26 » The 19th amendment to United States Constitution takes effect, giving women the right to vote.
September 1 » The Fountain of Time opens as a tribute to the 100 years of peace between the United States and Great Britain following the Treaty of Ghent.
December 16 » The Haiyuan earthquake of 8.5Mw , rocks the Gansu province in China, killing an estimated 200,000.
Day of death June 11, 1938
The temperature on June 11, 1938 was between 5.3 °C and 18.4 °C and averaged 12.7 °C. There was 8.9 hours of sunshine (53%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
July 20 » The United States Department of Justice files suit in New York City against the motion picture industry charging violations of the Sherman Antitrust Act in regards to the studio system. The case would eventually result in a break-up of the industry in 1948.
July 31 » Archaeologists discover engraved gold and silver plates from King Darius the Great in Persepolis.
September 12 » Adolf Hitler demands autonomy and self-determination for the Germans of the Sudetenland region of Czechoslovakia.
October 5 » In Nazi Germany, Jews' passports are invalidated.
October 14 » The first flight of the Curtiss P-40 Warhawk fighter plane.
November 16 » LSD is first synthesized by Albert Hofmann from ergotamine at the Sandoz Laboratories in Basel.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I52263.php : accessed February 3, 2026), "Gerrit Oost (1898-1938)".
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