[curiosity]

WW-I was a consequence of an out of control arms race between Germany and England and also of a race to world empire. Nothing like that ever happened during the middle ages or during the 15'th through early 19'th centuries when Europe was still Christian.

Your analysis is very interesting (albeit filled with falsehood), but it doesn't answer my question: how exactly is the theory of evolution responsible for World War 1?

[tamalejoe]

The idea of men and nations locked in perpetual comflict in which the only moral law in nature is "survival of the fittest" simply led nations in a direction which was substantially different from that which a view of their neighbors as fellow children of God might have. This stuff isn't complicated.