Final answer:
The Treaty of Versailles humiliated Germany, leading to ultra-nationalism and the rise of the Nazi Party.
Step-by-step explanation:
The result of WWI that humiliated Germany and led to ultra-nationalism that developed into the fascist Nazi Party was the Treaty of Versailles. The treaty imposed heavy reparations on Germany, leading to economic hardship and widespread dissatisfaction among the German people. The harsh terms of the treaty, such as the loss of territory and military restrictions, fueled resentment and a desire for revenge, which contributed to the rise of Adolf Hitler and the Nazi Party.
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