World War II was primarily caused by the unresolved tensions from World War I, particularly the harsh terms of the Treaty of Versailles, which created economic hardship and resentment in Germany. The rise of totalitarian regimes, especially Adolf Hitler's Nazi Germany, fueled aggressive expansionist policies. Additionally, the failure of the League of Nations to maintain peace and the policy of appeasement adopted by Western powers further emboldened these regimes, leading to the invasion of Poland in 1939 and the subsequent outbreak of the war.
Hitler
The Arch Duke Ferdinand
Germany's aggression toward Poland
The assassination of Austrian Archduke Franz Ferdinand and his wife initiated the immediate series of events that led to World War I.
On September 1st 1939 the German army invaded neighboring Poland and caused what is known as today World War II.
A number of factors contributed to the start of WW2. - Hitler's rise to power, - Polictical, economic and other causes led to the war.
There were 4 main long term causes that led to the outbreak of World War I. These causes included militarism, alliances, imperialism, and nationalism.
One of them was when the Japanese bombed Pearl Harbor.
poor countries wnted to have more colonies
Hitler
Poland
The Arch Duke Ferdinand
There was several factors that led to World War One. One of the major causes of the war was the assassination of Archduke Franz Ferdinand and his spouse.
Hitler
It outraged the Austro-Hungarians and caused world war I.
The catalyst that led to the start of World War II in Europe was Germany's invasion of Poland in September 1939. This act prompted Britain and France to declare war on Germany, setting off a chain reaction of military conflicts that escalated into a global war.
Germany's aggression toward Poland