Answer:
In West Africa the slave trade had different expressions. Some states emerged organized around the gold economies and sub-Saharan slave trade: the Empire of Ghana, that of Mali and the Songhai. In these states, slave trade focused on "production goods" and involved a larger number of people compared to the east coast. Vigorous men and some adult women were mostly enslaved in the west. The trafficking on the east coast was different. The goal was to get "consumer goods", so children and women were mostly enslaved for domestic servitude. The slave trade on the west coast became larger with the transatlantic trade of enslaved people. Nevertheless, other communities in West Africa largely resisted the slave trade. For example, the Mossi Kingdom that carried out defense actions against the slave attacks of the powerful states of the Western Sahel for several years. Anyway, the Mossi Kingdom finally entered the slave trade in the 1800s.