January 8 » George Washington delivers the first State of the Union address in New York City.
May 29 » Rhode Island becomes the last of North America's original Thirteen Colonies to ratify the Constitution and become one of the United States.
July 12 » The Civil Constitution of the Clergy is passed in France by the National Constituent Assembly.
August 4 » A newly passed tariff act creates the Revenue Cutter Service (the forerunner of the United States Coast Guard).
October 22 » Northwest Indian War: Native American forces defeat the United States in the Harmar Campaign.
December 17 » The Aztec calendar stone is discovered at El Zócalo, Mexico City.
Day of death February 21, 1870
The temperature on February 21, 1870 was about 1.8 °C. There was 2 mm of rain. The air pressure was 15 kgf/m2 and came mainly from the west-northwest. The airpressure was 75 cm mercury. The atmospheric humidity was 78%. Source: KNMI
From June 4, 1868 till January 4, 1871 the Netherlands had a cabinet Van Bosse - Fock with the prime ministers Mr. P.P. van Bosse (liberaal) and Mr. C. Fock (liberaal).
January 23 » In Montana, U.S. cavalrymen kill 173 Native Americans, mostly women and children, in what becomes known as the Marias Massacre.
February 15 » Stevens Institute of Technology is founded in New Jersey, USA and offers the first Bachelor of Engineering degree in Mechanical Engineering.
July 15 » Reconstruction Era of the United States: Georgia becomes the last of the former Confederate states to be readmitted to the Union.
August 24 » The Wolseley expedition reaches Manitoba to end the Red River Rebellion.
September 20 » The Bersaglieri corps enter Rome through the Porta Pia, and complete the unification of Italy.
October 7 » Franco-Prussian War: Léon Gambetta escapes the siege of Paris in a hot-air balloon.
When copying data from this family tree, please include a reference to the origin: Jan De Backer, "Family tree De Backer - Evers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-backer-evers/I546653.php : accessed February 28, 2026), "Petrus de Ridder (1790-1870)".
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