French colonial policy incorporated concepts of assimilation and association. Assimilation presupposed the inherent superiority of French culture over all others, so that in practice the assimilation policy in the colonies meant extension of the French language, institutions, laws, and customs. The policy of association also affirmed the superiority of the French in the colonies, but it entailed different institutions and systems of laws for the colonizer and the colonized. Under this policy, the Africans in Ivory Coast were allowed to preserve their own customs insofar as they were compatible with French interests. An indigenous elite trained in French administrative practice formed an intermediary group between the French and the Africans.