The Blitz began.
Adolf Hitler made plans to invade Britain starting on September 21, 1940.
Exiled Soviet leader Leon Trotsky was assassinated with an ice axe in Mexico City.
Latvian Soviet Socialist Republic is established.
Adolf Hitler offered peace to Great Britain if they would surrender and allow Germany to dominate the country.
Adolf Hitler planned to invade Britain under the guise name 'Operation Sealion.'
Nazi forces moved on Britain for the first time after attacking shipping containers in the English Channel.
Hitler had his first and only tour of Paris, ticking Eiffel Tower and Napoleon's grave off his bucket list.
The first Dairy Queen restaurant opened in Joliet, Illinois, US.
A speech by Charles de Gaulle sparks the French Resistance to German occupation.
Sir Winston Churchill gave his famous 'Finest Hour' speech in the House of Commons.
The three Baltic states fall under Soviet occupation.
German troops occupy Paris.
Auschwitz concentration camp started operation after 728 Polish prisoners became the first to arrive.
Italy declared war on France and Britain.
The discovery of the chemical element Neptunium was announced.
Germany invaded France during WWII.
Winston Churchill presented his famous speech 'We Shall Fight on the Beaches.'
The first prisoners arrive at Auschwitz concentration camp.
The world's first Mcdonald's opened in San Bernardino, California.
Winston Churchill made his famous speech to the House of Commons.
Heinrich Himmler ordered the construction of the Auschwitz Concentration Camp.
Germany invades Denmark and Norway.
Booker T. Washington became the first Black person pictured on a US postage stamp.
Soviet troops murder about 22,000 Polish nationals.
The first US telecast was made from an airplane flying over New York City.
Two scientists from the University of California Radiation Laboratory discovered carbon-14, a new isotope of carbon.
Walt Disney released their second feature-length movie, 'Pinocchio,' in New York City.
Between 20,000 and 40,000 people died in a magnitude eight earthquake in Erzincan, Turkey.
Gone with the Wind, the drama film directed by Victor Fleming, premiered in Atlanta, Georgia.
After invading Finland, the Soviet Union was kicked out of the League of Nations.
U.S.S.R. attacks Finland.
Hitler survives assassination attempt.
US President Franklin D. Roosevelt received a letter from Albert Einstein detailing the possibility of atomic weapons.
Finnish long-distance runner Taisto Mäki broke the 10,000-meter world record in 29:52:06.
Germany invaded Poland in the free city of Danzig, which started World War II.
Molotov–Ribbentrop Pact is signed.
Siam changed its name to Thailand.
In Atlanta, Georgia, legislation passed that made pinball machines illegal in the city.
France carried out its last public execution.
Queen Elizabeth I and George VI became the first king and queen of Great Britain to travel to the US.
The 'Pact of Steel' was signed, an agreement between Fascist Italy and Nazi Germany.
Robert Menzies, Australia's longest-serving Prime Minister, was elected.
General Franco proclaims victory in the Spanish civil war.
The Heinkel He 100 fighter set a world airspeed record of 463 mph (745 km/h).
Chillán earthquake killed approximately 28,000 people.
Nazis launch Kristallnacht.
Germany expels Polish Jews.
Aviator Howard Hughes started his around-the-world flight.
China launches the 1938 Yellow River flood.
