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Non-Aggression Pact between Germany and Soviet Union
On August 23, 1939, shortly before World War II broke out in Europe enemies. Nazi Germany and the Soviet Union surprised the world by signing the German Soviet Nonaggression Pact, in which the two countries agreed to take no military action against each other for the next 10 years.
https://en.wikipedia.org/wiki/Molotov%E2%80%93Ribbentrop_Pact -
Japan attacks Manchuria
Description the Japanese invasion of Manchuria began on 19 September 1931, when the Kwantung Army of the Empire of Japan invaded Manchuria immediately following the Mukden Incident. After the war, the Japanese established the puppet state of Manchukuo. -
Germany leaves League of Nations
In October 1933, some nine months after Adolf Hitler was appointed chancellor of Germany, the German government announced its withdrawal from the League of Nations. The ostensible reason was the refusal of the Western powers to acquiesce in Germany's demands for military parity.
https://www.upi.com/Archives/1933/10/14/Germany-withdraws-from-League-of-Nations-disarmament-pact/5411430087122/ -
US Neutrality Acts Signed
On August 31, 1935, Congress passed the first Neutrality Act prohibiting the export of “arms, ammunition, and implements of war” from the United States to foreign nations at war and requiring arms manufacturers in the United States to apply for an export license.
https://en.wikipedia.org/wiki/Neutrality_Acts_of_the_1930s -
Japan attacks China
The Second Sino-Japanese War was a military conflict fought primarily between the Republic of China and the Empire of Japan from July 7, 1937, to September 2, 1945. It began with the Marco Polo Bridge Incident in 1937 in which a dispute between Japanese and Chinese troops escalated into a battle. -
Germany takes over Austria
Anschluss refers to the annexation of Austria into Nazi Germany on 12 March 1938. The word's German spelling, until the German orthography reform of 1996, was Anschluß and it was also known as the Anschluss Österreichs.
https://www.history.com/this-day-in-history/germany-annexes-austria -
Munich Peace Conference Begins
Munich Agreement, September 30, 1938 , settlement reached by Germany, Great Britain, France, and Italy that permitted German annexation of the Sudetenland, in western Czechoslovakia.
https://en.wikipedia.org/wiki/Munich_Agreement -
Germany takes over Czechoslovakia
The German occupation of Czechoslovakia began with the German annexation of Czechoslovakia's border regions known collectively as the Sudetenland, under terms outlined by the Munich Agreement.
https://www.history.com/this-day-in-history/nazis-take-czechoslovakia -
Germany Invades Poland
The Invasion of Poland, known in Poland as the September Campaign or the 1939 Defensive War, and in Germany as the Poland Campaign, was an invasion of Poland by Germany that marked the beginning of World War II.
https://www.history.com/this-day-in-history/germany-invades-poland -
France Falls to the Germans
The Battle of France, also known as the Fall of France, was the German invasion of France and the Low Countries during the Second World War.
http://www.bbc.co.uk/history/worldwars/wwtwo/fall_france_01.shtml -
Battle of Britain Begins
On this day in 1940, the Germans begin the first in a long series of bombing raids against Great Britain, as the Battle of Britain, which will last three and a half months, begins.
https://en.wikipedia.org/wiki/Battle_of_Britain -
Japan leaves Leauge of Nations
Japan stuns world, withdraws from league. The Japanese delegation, defying world opinion, withdrew from the League of Nations Assembly today after the assembly had adopted a report blaming Japan for events in Manchuria.
https://www.quora.com/Why-did-Japan-leave-the-League-of-Nations