This criterion is essential. It describes how human norms and conventions differ in the ritualised behaviours found in nonhuman primates. A variety of authors have explained feasible iconographical influences from Mesopotamia on the Indus Valley.[ninety eight] Gregory Possehl notes "Mesopotamian themes in Indus iconography", especially types related to the Gilgamesh https://mourningjewelry78775.webbuzzfeed.com/31614400/history-of-beads-secrets