In what area of africa did the early bantu originate? western and central africa eastern africa northeastern africa southern and central africa

Western and Central Africa

Explanation:

Three thousand years ago, or perhaps four thousand years ago, the Bantus left the western and central parts of Africa and set out in two separate movements, south and east, undertaking the largest migration ever undertaken in Africa. For unknown reasons this migratory current continued until the 19th century.

The Bantu were one of the first peoples to inhabit the African continent. The present regions of Nigeria and Cameroon were the localities where this Iron Age group emerged.  They were responsible for introducing new techniques that contributed to the formation of the first farming communities. The development of metallurgy and ceramics were specific examples of Bantu inventions, which helped in the rise of human evolution.

it affected it because the kingdoms (with trade) slowly got richer and richer.