what were the main reasons the bantu speaking tribes left central africa
Bantu peoples Around 3,000 years ago, speakers of the Proto-Bantu language group began a millennia-long series of migrations eastward from their homeland between West Africa and Central Africa, at the border of eastern Nigeria and Cameroon.[4] This Bantu expansion first introduced Bantu peoples to central, southern and southeastern Africa, regions they had previously been absent from. The proto-Bantu migrants in the process assimilated and/or displaced a number of earlier inhabitants that they came across, such as Pygmy and Khoisan populations in the centre and south, respectively. They also encountered some Afro-Asiatic outlier groups in the southeast who had been there for centuries, having migrated from Northeast Africa.[5][6]