Martin Kamen and Sam Ruben Discover Carbon-14, February 27, 1940

Denmark leaves the League of Nations. Date: July 20, 1940 Read more on Wikipedia → 📅 Other events on July 20 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940Allied Forces Recapture Narvik, First Infantry Victory of WWII, May 28, 1940Winter War: Finland Signs Moscow Peace Treaty, Cedes…

World War II: Adolf Hitler and Benito Mussolini meet at the Brenner Pass in the Alps and agree to form an alliance against France and the United Kingdom. Date: March 18, 1940 Read more on Wikipedia → 📅 Other events on March 18 📅 Events on this day in 1940 📅 On This Day (Today)…

World War II: Rotterdam, Netherlands, is bombed by the Luftwaffe of Nazi Germany despite a ceasefire, killing about 900 people and destroying the historic city center. Date: May 14, 1940 Read more on Wikipedia → 📅 Other events on May 14 📅 Events on this day in 1940 📅 On This Day (Today) More events…

In Mexico City, exiled Russian revolutionary Leon Trotsky is fatally wounded with an ice axe by Ramón Mercader. He dies the next day. Date: August 20, 1940 Read more on Wikipedia → 📅 Other events on August 20 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940Franz Rademacher…

World War II: The Royal Navy attacks the French naval squadron in Algeria, to ensure that it will not fall under German control. Of the four French battleships present, one is sunk, two are damaged, and one escapes back to France. Date: July 3, 1940 Read more on Wikipedia → 📅 Other events on July…

World War II: Fascist Italy declares war on France and the United Kingdom, beginning an invasion of southern France. Date: June 10, 1940 Read more on Wikipedia → 📅 Other events on June 10 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940Battle of Gabon Ends, Free French…