ORAL TRADITION: ~ They had griots that would remember important information. ~ There is one in every village. ~ Tell stories to represent things.
Silent Trade: They could not talk so they would put the stuff in a box and then put money it would be in a matter of trust to do this.
Important stuff: They had some important things like: ~ Gold ~ Slat ~ Copper
Africa Geography: ( They had many types of things like) ~ Niger River ~ Sahara Dessert ~Rainforest ~Salt Mines ~ Savvana