WHAT ALL HAPPENED JANUARY TO JUNE 1940
Find out what all happened January to June 1940

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

World War II: The Siege of Calais ends with the surrender of the British and French garrison. (26. May 1940)

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

World War II: After fierce fighting, the poorly trained and equipped Dutch troops surrender to Germany, marking the beginning of five years of occupation. (15. May 1940)

Romania cedes Bessarabia (current-day Moldova) to the Soviet Union. (28. June 1940)

World War II: 13,000 British and French troops surrender to Major General Erwin Rommel at Saint-Valery-en-Caux. (12. June 1940)

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

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

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

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. (13. May 1940)

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

Queen Wilhelmina of the Netherlands flees her country to Great Britain after the German invasion. Princess Juliana takes her children to Canada for their safety. (13. May 1940)

The three Baltic states of Estonia, Latvia and Lithuania fall under the occupation of the Soviet Union. (17. June 1940)

World War II: Belgium surrenders to Nazi Germany to end the Battle of Belgium. (28. May 1940)

The Soviet Union presents an ultimatum to Lithuania resulting in Lithuanian loss of independence. (14. June 1940)

World War II: Norwegian refugees form a government-in-exile in London (5. May 1940)

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

World War II: Norway surrenders to German forces. (10. June 1940)

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

FM radio is demonstrated to the Federal Communications Commission for the first time. (5. January 1940)