Final answer:
One powerful spirit medicine used in Indigenous shamanism is n/um tchai, a medicine dance practiced by the !Kung San in Central Africa. While not widely used in modern Western medicine, spirit medicine practices like n/um tchai are still used today in some traditional healing practices and ceremonies.
Step-by-step explanation:
One powerful spirit medicine used in Indigenous shamanism is n/um tchai, a medicine dance practiced by the !Kung San in Central Africa. This dance is believed to draw up spiritual forces within oneself for shamanic self-healing. It is valued as a means of healing and has been studied extensively.
While spirit medicine practices like n/um tchai may not be widely used in modern Western medicine, they are still used today in some traditional healing practices and ceremonies. Many indigenous cultures recognize the power of spiritual forces in healing and continue to incorporate them into their healthcare systems.