C - They had a rivalry during that time
I think it is the last one, because revolutions are connected with the need for better treatment and living conditions.
It's A: Ghana, Mali, then Songhai
Cuz the God (Allah) command to the rich people to give 1 Dollers or any cruency in fourty when someone is a rich mean he have to help the poor and the poor people can have enough food an other thing
