In the first millennium BC, they were displaced by Bantu peoples arriving from the north, most of whom likely originated in what is today northwestern Nigeria and southern Niger. Bantu speakers introduced the cultivation of bananas and taro, as well as maintenance of large cattle herds, to Angola's central highlands and the Luanda plain. Due to a number of inhibiting geographic factors throughout the territory of Angola, namely harshly traversable land, hot/humid climate, and a plethora of deadly diseases, intermingling of pre-colonial tribes in Angola had been rare.
in the first millennium bc they were displaced by bantu peoples arriving from the north most of whom likely originated in what is today northwestern nigeria and southern niger bantu speakers introduced the cultivation of bananas and taro as well as maintenance of large cattle herds to angola's central highlands and the luanda plain due to a number of inhibiting geographic factors throughout the territory of angola namely harshly traversable land hot/humid climate and a plethora of deadly diseases intermingling of pre-colonial tribes in angola had been rare