This work shows that the rule of Western civilization is rooted in factors related to the territory where it developed. Jared Diamond demonstrates the amazing filigree tracery of cause and effect that leads a system, ie a civilization, to take precedence over its competitors. It is no exaggeration to speak of an ecology of civilizations. The awareness of the complexity of the networks of interrelationships such as those illustrated in this item is an intellectual breakthrough for the reader to a time when our world seems on the brink of collapse because of technological obscurantism who leads the development.