can someone help Explain both the biological/behavioral causes and consequences that account for this evolutionary phenomenon. If there does exist an adaptive advantage for those groups that possess spiritual belief systems, why does it not appear prior to the Archaic H. sapiens? Also, what might the adaptive advantage be for those species that possess such beliefs? ( for the paragraph below)

"Throughout the modern era there has never been a culture group or population encountered, no matter how remote or isolated that group might have been, that did not exhibit some form of spirituality or in some cases an institutionalized religion. Although the individual forms and beliefs regarding spirituality and religion vary considerably among various culture groups, at least one belief consistent with all spiritual belief systems includes the concept of life after death in one form or another.

Moreover, there exists evidence that concepts of spirituality pre-date modern H. sapiens and existed among the Neanderthals (Archaic H. sapiens) and perhaps as early as H. erectus. Such a widespread occurrence for the emergence of spirituality would hardly seem coincidental, and thus likely entail an adaptive advantage for those that possess these beliefs."