March 23 » The Ahmadiyya Muslim Community is established by Mirza Ghulam Ahmad in Qadian, British India.
April 1 » The University of Northern Colorado was established, as the Colorado State Normal School.
May 31 » Johnstown Flood: Over 2,200 people die after a dam fails and sends a 60-foot (18-meter) wall of water over the town of Johnstown, Pennsylvania.
June 3 » The first long-distance electric power transmission line in the United States is completed, running 14 miles (23km) between a generator at Willamette Falls and downtown Portland, Oregon.
July 11 » Tijuana, Mexico, is founded.
September 28 » The General Conference on Weights and Measures (CGPM) defines the length of a meter.
Day of death December 11, 1949
The temperature on December 11, 1949 was between -0.5 °C and 6.3 °C and averaged 3.0 °C. There was 4.0 hours of sunshine (51%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
January 2 » Luis Muñoz Marín is inaugurated as the first democratically elected Governor of Puerto Rico.
February 19 » Ezra Pound is awarded the first Bollingen Prize in poetry by the Bollingen Foundation and Yale University.
May 4 » The entire Torino football team (except for two players who did not take the trip: Sauro Tomà, due to an injury and Renato Gandolfi, because of coach request) is killed in a plane crash.
August 5 » In Ecuador, an earthquake destroys 50 towns and kills more than 6,000.
December 2 » Convention for the Suppression of the Traffic in Persons and of the Exploitation of the Prostitution of Others is adopted.
December 13 » The Knesset votes to move the capital of Israel to Jerusalem.
When copying data from this family tree, please include a reference to the origin: Geert Datema, "Family tree Datema", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-daterma/I166.php : accessed January 26, 2026), "Hendrik Broer (1889-1949)".
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