Why did Germany and Japan place the blame on other countries for their economic downturns during the Great Depression, and how did this inevitably lead to the Second World War?

Why did Germany and Japan place the blame on other countries for their economic downturns during the Great Depression, and how did this inevitably lead to the Second World War?

The Treaty of Versailles, the treaty that punished Germany for World War I, had little to do with Japan.

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