During the colonial era, the global process of colonisation served to spread and synthesize the social and political belief systems of the "mother-countries" which often included a belief in a certain natural racial superiority of the race of the mother-country. Colonialism also acted to reinforce these same racial belief systems within the "mother-countries" themselves. Usually also included within the colonial belief systems was a certain belief in the inherent superiority of male over female, however this particular belief was often pre-existing amongst the pre-colonial societies, prior to their colonisation.