What are some invasion that happened in the Ghana Empire? What was the Internal Fighting in the Ghana Empire?
What was the over grazing in the Ghana Empire?

he kingdom began to decline in the eleventh century. In 1076, the Berbers, commanded by Abu Bakr, attacked Ghana from the north. This invasion destroyed Koumbi Saleh. The kingdom of Ghana's control over the salt trade in the region began to decline as a result of the invasion. The kingdom finally fell around 1235, when the Malinke people overthrew Ghana and established the empire of Mali (Holt).

we need an attachment to see what you are talking about.

it depends on which society you are referring to. many civilization performed rituals so the gods would with their growing season but the most well known is that of the aztecs. they would make sacrifices, usually animals, but sometimes humans as well.