The unique tradition and culture of a people is what define them. These varies from nation to nation, community to community and some goes down to tribe in Africa.
In Benin Kingdom in Nigeria; “From the 14th to 18th centuries, when a monarch, an Oba dies in the Kingdom of Benin, his would-be successor had two bronze heads made, one in the late ruler’s likeness and one in his own.
They were placed on a purpose-built altar, face to face, each surmounted by an ivory tusk engraved with commemorative scenes. Thus the new Oba established the bond of continuity with his predecessor, legitimatizing his own rule.