which of the following factors most contributed to the flourishing of great civilization in Africa between 400-1600

a) the spread of Christianity to sub- Saharan nations

b)extensive trade with north Africa, Arabic, and Portuguese trading partners

c) the growth of wheat and rice agriculture

d)new trade relationship with the American colonies

3 answers

I think it is b
I agree with you. That was the spread of Islam and the opening of a trade route around Africa by Vasco de Gama from Europe all the way to southeast asia
What is the relationship between the factors that contribute to the development of civilization