Respuesta :
The integration of the West African states into wider regional was carried out via the trans-Saharan trade routes.
The trans-Saharan trade route is the route that transformed the West Africa because its connected the region to the larger parts of the world.
The main item of trade on the route were mainly gold and salt because they were in abundance in the western Africa but scarce in the North Africa.
Therefore, the Option C is correct.
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