The German occupation of Czechoslovakia was the final concession of the policy of appeasement. Hitler's pacts with Italy and the Soviet Union gave him the confidence to invade Poland. This act led Britain to declare war.
15 March 1939: the German army invaded the rest of Czechoslovakia
31 March 1939: Britain promised to defend Poland
22 May 1939: Italy and Germany signed the Pact of SteelA military and political alliance between the Kingdom of Italy and Nazi Germany. to help each other in the event of war
23 August 1939: to the dismay of France and Britain, the Nazi-Soviet PactGermany and USSR agreed not to go to war with each other, August 1939. was signed by Germany and Russia. The two nations promised not to fight each other