The event that precipitated the outbreak of World War Il was _____.
The main event and the trigger for what started world war second was Germany’s invasion of Poland in September 1939. The invasion had many decades of turmoil and conflict story attached to it.The Treaty of Versailles, signed at the end of world war one placed some very harsh restrictions on Germany, which created a feeling of resentment among the Germans. Due to the financial depression of the 1920’s, Germany simply did not have the funds to pay the reparation fees demanded by the treaty.