<P> The Bantu expansion is the name for a postulated millennia - long series of migrations of speakers of the original proto - Bantu language group . The primary evidence for this expansion has been linguistic, namely that the languages spoken in Sub-Equatorial Africa are remarkably similar to each other . Attempts to trace the exact route of the expansion, to correlate it with archaeological evidence and genetic evidence, have not been conclusive; thus many aspects of the expansion remain in doubt or are highly contested . The Bantu traveled in two waves, the first across the Congo forest region . </P> <P> The Bantu people originally came from West Africa, in the modern day Cameroon . The linguistic core of the Bantu family of languages, a branch of the Niger--Congo language family, was located in the adjoining region of Cameroon and Nigeria . From this core, expansion began about 3,000 years ago, with one stream going into East Africa, and other streams going south along the African coast of Gabon, Democratic Republic of the Congo, and Angola, or inland along the many south - to - north flowing rivers of the Congo River system . The expansion eventually reached South Africa, probably as early as 300 AD . </P> <P> Initially archaeologists believed that they could find archaeological similarities in the ancient cultures of the region that the Bantu - speakers were held to have traversed; while linguists, classifying the languages and creating a genealogical table of relationships believed they could reconstruct material culture elements . They believed that the expansion was caused by the development of agriculture, the making of ceramics, and the use of iron, which permitted new ecological zones to be exploited . In 1966 Roland Oliver published an article presenting these correlations as a reasonable hypothesis . </P>

Where did the bantu of east and southern africa migrate from