January 1 » New York, New York annexes land from surrounding counties, creating the City of Greater New York. The four initial boroughs, Manhattan, Brooklyn, Queens, and The Bronx, are joined on January 25 by Staten Island to create the modern city of five boroughs.
February 7 » Dreyfus affair: Émile Zola is brought to trial for libel for publishing J'Accuse…!.
June 13 » Yukon Territory is formed, with Dawson chosen as its capital.
July 1 » Spanish–American War: The Battle of San Juan Hill is fought in Santiago de Cuba, Cuba.
September 2 » Battle of Omdurman: British and Egyptian troops defeat Sudanese tribesmen and establish British dominance in Sudan.
December 10 » Spanish–American War: The Treaty of Paris is signed, officially ending the conflict.
Day of death April 15, 1899
The temperature on April 15, 1899 was about 7.3 °C. The airpressure was 74 cm mercury. The atmospheric humidity was 85%. Source: KNMI
February 2 » The Australian Premiers' Conference held in Melbourne decides to locate Australia's capital city, Canberra, between Sydney and Melbourne.
February 14 » Voting machines are approved by the U.S. Congress for use in federal elections.
March 27 » Emilio Aguinaldo leads Filipino forces for the only time during the Philippine–American War at the Battle of Marilao River.
March 30 » German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
July 11 » Fiat founded by Giovanni Agnelli in Turin, Italy.
July 26 » Ulises Heureaux, the 27th President of the Dominican Republic, is assassinated.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I75708.php : accessed December 24, 2025), "Johannes Siccama (1898-1899)".
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