Another literature compares cultures of rain forest versus desert dwellers, where the former tend toward inventing polytheistic religions, the latter, monotheistic ones. This probably reflects ecological influences as well—life in the desert is a furnace-blasted, desiccated singular struggle for survival; rain forests teem with a multitude of species, biasing toward the invention of a multitude of gods. Moreover, monotheistic desert dwellers are more warlike and more effective conquerors than rain forest polytheists, explaining why roughly 55 percent of humans proclaim religions invented by
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