We can count many causes of World War 2, political and others, but the three root causes of World War 2 were :
1. The Prussian Militarism - developed in 200 years of history, it was the force that made Germany so powerful, and made it possible for a man like Adolf Hitler to gain total control of it.
2. Adolf Hitler - a madman and political genius, Adolf Hitler re-ignited the Prussian militarism after the German defeat in World War 1, and with this great power under his total control, he started the greatest and cruelest war in history, in his planned attempt to vastly expand Germany and to dominate the entire world.
3. Appeasement - Britain and France could easily stop Hitler when Germany was still weak, but their war-traumatized pacifist desire to totally avoid violence just helped Hitler rebuild Germany's military strength more rapidly, until it was too late to stop him.
The Prussian Militarism.
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