Answer:
According to myth, the dead of the Bida originated the decline in gold trade in Ghana.
Step-by-step explanation:
The reason behind this is that first of all the trade allowed them to exchange salt for gold. Also, Egyptians were always eager to acquire as much as they could because gold was a really important element in their culture. But the death of the Bida was the myth that caused the decline of the gold trade in Ghana due to the importance of the empire to Ghana. It is said that after they fell the region changed completely.