2. What people were forced to cut large blocks of salt before camels hauled them to the savanna?

explanation below

Explanation:

Many items were traded between the West African and North African people and the two most notable ones were salt and gold.  

West Africans did not have any local source of salt at that time and so they decided to get it from places like Taghaza, in the Nothern region of Mali.

The salts are usually been dug from the ground by miners and the salts were transported through caravans, controlled by the Berbers who acted as the intermediaries between the West and North African states.  

the answers are a b and d

the congress realized that action had to be.