Positive effects of the Bantu migration:In this lesson, we are going to learn about the positive effects of the Bantu migration which include:- Introduction of iron working;the use of iron tools in the interior of East Africa where people were at first using stone tools.- They introduced centralized administration: They introduced a centralized system of government whereby the king acted as the overall ruler, under who were the other chiefs, down to the lay person. - Introduced a system of building permanent homes: They opened new land to settlement in families, clans and villages- Introduction of new crops e.g. yams, bananas. - The absorbed other tribes e.g. the gathers.