Spiritual Darkness by Geography???

I hope this is the right place for this topic. I just finished reading 'Cortes' by Richard Marks and though I wasn't surprised by the mentions of human sacrifice I didn't realize just how common it was among many, if not most, of the tribes. It seems likely that the problems facing Central and South America today are the result of a spiritual stronghold established by the drenching of their land through those sacrifices. Can we correlate other countries' problems directly to past levels of human sacrifice?