WHAT ALL HAPPENED FEBRUARY TO APRIL 1940
Find out what all happened February to April 1940

The Soviet Union begins mass deportations of Polish citizens from occupied eastern Poland to Siberia. (10. February 1940)

Members of Soviet politburo, including general secretary Joseph Stalin, sign an order for the execution of 25,700 Polish intelligentsia, including 14,700 Polish POWs, known also as the Katyn massacre. (5. March 1940)

The Rhythm Night Club fire at a dance hall in Natchez, Mississippi, kills 198 people. (23. April 1940)

Five people are killed in an arson attack on the offices of the communist newspaper Norrskensflamman in Luleå, Sweden. (3. March 1940)

Martin Kamen and Sam Ruben discover carbon-14. (27. February 1940)

Sino-Japanese War: Japan declares Nanking capital of a new Chinese puppet government, nominally controlled by Wang Jingwei. (30. March 1940)

The Allies begin their attack on the Norwegian town of Narvik which is occupied by Nazi Germany. (15. April 1940)

World War II: Altmark Incident: The German tanker Altmark is boarded by sailors from the British destroyer HMS Cossack. 299 British prisoners are freed. (16. February 1940)

World War II: Axis Powers – 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. (18. March 1940)

Vidkun Quisling seizes power in Norway. (9. April 1940)

The Russo-Finnish Winter War ends. (13. March 1940)

The Lahore Resolution (Qarardad-e-Pakistan or the then Qarardad-e-Lahore) is put forward at the Annual General Convention of the All India Muslim League. (23. March 1940)

World War II: Royal Marines land in Namsos, Norway in preparation for a larger force to arrive two days later. (14. April 1940)

First person killed in a German bombing raid on the UK in World War II during a raid on Scapa Flow in the Orkney Islands, James Isbister. (16. March 1940)

Basketball is televised for the first time (Fordham University vs. the University of Pittsburgh in Madison Square Garden). (28. February 1940)

Booker T. Washington becomes the first African American to be depicted on a United States postage stamp. (7. April 1940)

For her role as Mammy in Gone with the Wind, Hattie McDaniel becomes the first African American to win an Academy Award. (29. February 1940)

Finland initiates Winter War peace negotiations (29. February 1940)

The second full length animated Walt Disney film, Pinocchio, premieres. (7. February 1940)

World War II: Operation Weserübung – Germany invades Denmark and Norway. (9. April 1940)