What German moves and diplomatic failures led to the start of World War II in Europe? What role did the Soviet Union play in the road to war?

Verified Answer :

Germany began to build up its military when Adolf Hitler
came to power.  After that he began
invading one European country after another.
Russia had signed a non-aggression pact with Germany. France and Great
Britain were still recovering from the previous war that they signed a treaty
of appeasement with the Germans who later took territory from
Czechoslovakia.  When Germany invaded
Poland with Russia’s help, it started The Second World War.