The above is a rather short sighted view of history. Teribus has taken World War II out of context of the larger picture of European history, and examined it as a separate and distincly independent anomaly. It is not.
    World War II is a direct and logical outcome of the First World War. As an aside, I'm wondering why historians haven't called that whole period of the Twentieth Century "The World War." One cannot study history in such a detached, disjointed, and disconnected manner and hope to learn any lessons. It is all cause and effect. If you wish to understand the roots of the Second World War, study the causes of the First World War. I recommend Neil Fergusson's "The Pity of War." (I hope I spelled his name correctly.)
Jim