The religious beliefs of the early bantu and shona both involved the practice of animism. christianity. islam. polytheism.

Ok ... not Christianity or Islam.

So it's between animism: the belief that natural objects, natural phenomena, and the universe have souls. This is not a practice of religion.

Or polytheism: the doctrine of or belief in more than one god or in many gods. Such as Rain God, God of fertility, God of healing etc.

Process of deduction goes with polytheism.

If I'm incorrect I'll put a reply.