January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
March 24 » Mayor of New York City Robert Anderson Van Wyck breaks ground for a new underground "Rapid Transit Railroad" that would link Manhattan and Brooklyn.
April 30 » Hawaii becomes a territory of the United States, with Sanford B. Dole as governor.
May 24 » Second Boer War: The United Kingdom annexes the Orange Free State.
July 9 » The Federation of Australia is given royal assent.
November 7 » The People's Party is founded in Cuba.
Day of marriage March 6, 1920
The temperature on March 6, 1920 was between 7.3 °C and 16.8 °C and averaged 12.3 °C. There was 0.3 mm of rain. There was 1.3 hours of sunshine (12%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 19 » The United States Senate votes against joining the League of Nations.
February 9 » Under the terms of the Svalbard Treaty, international diplomacy recognizes Norwegian sovereignty over Arctic archipelago Svalbard, and designates it as demilitarized.
July 11 » In the East Prussian plebiscite the local populace decides to remain with Weimar Germany.
September 16 » The Wall Street bombing: A bomb in a horse wagon explodes in front of the J. P. Morgan building in New York City killing 38 and injuring 400.
September 17 » The National Football League is organized as the American Professional Football Association in Canton, Ohio.
November 12 » Italy and the Kingdom of Serbs, Croats and Slovenes sign the Treaty of Rapallo.
Day of death February 19, 1969
The temperature on February 19, 1969 was between -7.7 °C and -1.4 °C and averaged -4.5 °C. There was 0.3 mm of rain during 0.5 hours. The partly or heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
April 1 » The Hawker Siddeley Harrier, the first operational fighter aircraft with Vertical/Short Takeoff and Landing capabilities, enters service with the Royal Air Force.
April 3 » Vietnam War: United States Secretary of Defense Melvin Laird announces that the United States will start to "Vietnamize" the war effort.
June 23 » IBM announces that effective January 1970 it will price its software and services separately from hardware thus creating the modern software industry.
August 13 » The Apollo 11 astronauts enjoy a ticker tape parade in New York City. That evening, at a state dinner in Los Angeles, they are awarded the Presidential Medal of Freedom by U.S. President Richard Nixon.
August 14 » The Troubles: British troops are deployed in Northern Ireland as political and sectarian violence breaks out, marking the start of the 37-year Operation Banner.
September 1 » A coup in Libya brings Muammar Gaddafi to power.
When copying data from this family tree, please include a reference to the origin: Hans Dunning, "Family tree Dunning", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-dunning/R4100.php : accessed March 15, 2026), "Hindertje Vriesma (1900-1969)".
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