Which of the following is an example of the impact trade had on the people of southern and eastern africa?

a.) eastern africans practiced the same religion as their ancestors.
b.) those living in southern africa were isolated from the rest of the world.
c.) southern africans only use goods that are produced in their nation.
d.) millions of people in east africa speak a form of bantu. <

i ask this because i'm not very good at social studies. tvt

One of the most important influences on Eastern and Southern Africa was the spread of the Bantu languages in the region. Referred to as Niger-Congo languages, they predominate throughout much of Eastern, Central and Southern Africa.

d.) Millions of people in East Africa speak a form of Bantu.

Explanation:

The greatest impact that the trade in southern and Eastern Africa had in the arican continent and in the people is the fact that the language Bantu spread accross the continent, and because of that millions of people in East Africa speak a form of Bantu.