May 8 » The first games of the Italian football league system are played.
June 12 » Philippine Declaration of Independence: General Emilio Aguinaldo declares the Philippines' independence from Spain.
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.
July 1 » Spanish–American War: The Battle of San Juan Hill is fought in Santiago de Cuba, Cuba.
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.
December 3 » The Duquesne Country and Athletic Club defeated an all-star collection of early football players 16–0, in what is considered to be the very first all-star game for professional American football.
Day of death March 17, 1975
The temperature on March 17, 1975 was between -1.5 °C and 5.7 °C and averaged 0.5 °C. There was 2.8 mm of rain during 1.8 hours. There was 3.4 hours of sunshine (29%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-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 4 » Haicheng earthquake (magnitude 7.3 on the Richter scale) occurs in Haicheng, Liaoning, China.
February 9 » The Soyuz 17 Soviet spacecraft returns to Earth.
April 21 » Vietnam War: President of South Vietnam Nguyễn Văn Thiệu flees Saigon, as Xuân Lộc, the last South Vietnamese outpost blocking a direct North Vietnamese assault on Saigon, falls.
May 28 » Fifteen West African countries sign the Treaty of Lagos, creating the Economic Community of West African States.
December 2 » Laotian Civil War: The Pathet Lao seizes the Laotian capital of Vientiane, forces the abdication of King Sisavang Vatthana, and proclaims the Lao People's Democratic Republic.
December 26 » Tu-144, the world's first commercial supersonic aircraft, surpassing Mach2, went into service.
When copying data from this family tree, please include a reference to the origin: Jon Vandenberg, "Vandenberg Tree", database, Genealogy Online (https://www.genealogieonline.nl/vandenberg-tree/R1089.php : accessed January 8, 2026), "Geertruida (Truus) Hopman (1898-1975)".
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