which came first, the oil or the dysfunction?

i was listening to "world update" on the bbc this morning on the way to work, and as a sidebar to secretary clinton's visit they had a discussion about the "unchecked" corruption in the nigerian government, and how that seems to be an issue in resource rich "developing countries"...one of the participants was a professor from stanford university ( sorry...didn't catch her name...i know..sloppy reporting...sue me...it was dark and i was dodging semis on route 20) who has co-authored a book on ths subject...she said that a lack of a strong democratic government and lax social institutions holding miscreants accountable were the cause...she pointed out that when norway discovered oil there was no corruption issue because the norwegians had a well developed society that could control a sudden increase in wealth...all in all this seems to me to be saying that the nigerians are substandard because of weak institutions, but is that it? didn't traditional nigerian culture have mores that would deal with anti-social behavior? i'll bet it did...so is it a failure of nigerian culture, or was that culture exploded by a sudden influx of wealth and outside ideas? subverted by the developed worlds lust for oil...why else would people flock to miserable mega-slums other than a catastophic failure of their traditional way of life? what impelled that failure? don't know, but it's worth looking into.