How was the human sacrifice related to war, to market activity, to slavery, and to religious belief and practice

Human sacrifice was a practice of the pre-Columbian Aztec Civilization. To them human sacrifice is "good death" and war which to usually meant sacrifice. This sort of activity happened regularly, as a public event, where people would gather to watch the sacrifice. Aztecs do not sacrifice their own people all the time. Sometimes they use prisoners or war as an offering to their gods. They are being killed ritually in a manner that they was supposed to please or appease gods or spirits of the deceased.

i would go with the last one

c. the passage of the fifteenth amendment