June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
September 12 » Tirah Campaign: In the Battle of Saragarhi, ten thousand Pashtun tribesmen suffer several hundred casualties while attacking 21 Sikh soldiers in British service.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
December 30 » The British Colony of Natal annexes Zululand.
Day of death March 25, 1900
The temperature on March 25, 1900 was about 4.3 °C. The airpressure was 75 cm mercury. The atmospheric humidity was 49%. Source: KNMI
February 28 » The Second Boer War: The 118-day "Siege of Ladysmith" is lifted.
May 18 » The United Kingdom proclaims a protectorate over Tonga.
May 29 » N'Djamena is founded as Fort-Lamy by the French commander Émile Gentil.
June 20 » Baron Eduard Toll, leader of the Russian Polar Expedition of 1900, departs Saint Petersburg in Russia on the explorer ship Zarya, never to return.
July 2 » The first Zeppelin flight takes place on Lake Constance near Friedrichshafen, Germany.
October 25 » The United Kingdom annexes the Transvaal.
When copying data from this family tree, please include a reference to the origin: H. Grevinga, "Family tree Grevinga", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-grevinga/I1226.php : accessed February 15, 2026), "hendrik de veen (1897-1900)".
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