Why did the gold–salt trade have an enormous impact on the cultures of West Africa? (PLZ FAST IM DOING A TIMED TEST)

It created a network of trade routes connecting East Africa and West Africa.

By connecting West Africa to the rest of the world, it brought West Africans new goods and ideas.

By connecting West Africa to Europe, it allowed West Africans to conquer Mediterranean lands.

It established roadways that made travel between West Africa and North Africa faster.