World War II: Pétain Becomes Chief of State of Vichy France, June 16, 1940

The Central Committee of the Mongolian People's Revolutionary Party elects Yumjaagiin Tsedenbal as General Secretary, marking the beginning of his 44-year-long tenure as de facto leader of Mongolia. Date: April 8, 1940 Read more on Wikipedia → 📅 Other events on April 8 📅 Events on this day in 1940 📅 On This Day (Today)…

Martin Kamen and Sam Ruben discover carbon-14. Date: February 27, 1940 Read more on Wikipedia → 📅 Other events on February 27 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940Churchill Becomes UK Prime Minister; Germany Invades Western Europe, May 10, 1940Paul Creston’s Saxophone Sonata Premiered at Carnegie…

Booker T. Washington becomes the first African American to be depicted on a United States postage stamp. Date: April 7, 1940 Read more on Wikipedia → 📅 Other events on April 7 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940Churchill Becomes UK Prime Minister; Germany Invades Western…

World War II: Germany's conquest of France begins, as the German army crosses the Meuse. Winston Churchill makes his "blood, toil, tears, and sweat" speech to the House of Commons. Date: May 13, 1940 Read more on Wikipedia → 📅 Other events on May 13 📅 Events on this day in 1940 📅 On This…

The Winter War between Finland and the Soviet Union officially ends after the signing of the Moscow Peace Treaty. Date: March 13, 1940 Read more on Wikipedia → 📅 Other events on March 13 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940World War II: German Fighters Accidentally…