Answer:
human sacrifice, the offering of the life of a human being to a deity. The occurrence of human sacrifice can usually be related to the recognition of human blood as the sacred life force. Bloodless forms of killing, however, such as strangulation and drowning, have been used in some cultures. The killing of a human being, or the substitution of an animal for a person, has often been part of an attempt to commune with a god and to participate in divine life. Human life, as the most valuable material for sacrifice, has also been offered in an attempt at expiation.