February 7 » Second Boer War: British troops fail in their third attempt to lift the Siege of Ladysmith.
February 9 » The Davis Cup competition is established.
April 2 » The United States Congress passes the Foraker Act, giving Puerto Rico limited self-rule.
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.
August 3 » The Firestone Tire and Rubber Company is founded.
Day of death June 7, 1900
The temperature on June 7, 1900 was about 11.7 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 93%. Source: KNMI
February 7 » A Chinese immigrant in San Francisco falls ill to bubonic plague in the first plague epidemic in the continental United States.
February 23 » Second Boer War: During the Battle of the Tugela Heights, the first British attempt to take Hart's Hill fails.
June 14 » The second German Naval Law calls for the Imperial German Navy to be doubled in size, resulting in an Anglo-German naval arms race.
September 13 » Filipino insurgents defeat a small American column in the Battle of Pulang Lupa, during the Philippine–American War.
October 19 » Max Planck discovers Planck's law of black-body radiation.
December 19 » Hopetoun Blunder: The first Governor-General of Australia John Hope, 7th Earl of Hopetoun, appoints Sir William Lyne premier of the new state of New South Wales, but he is unable to persuade other colonial politicians to join his government and is forced to resign.
When copying data from this family tree, please include a reference to the origin: Jaap van der Werff, "Family tree Van der Werff / Kooistra", database, Genealogy Online (https://www.genealogieonline.nl/van-der-werff-stamboom/I68.php : accessed February 12, 2026), "Jan Verloop (1900-1900)".
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