When did the kingdoms of ghana and mali flourish?

a. 100 - 400, during the era when christianity was founded and organized

b.400 - 1400, during the era when the roman empire declined, the byzantine empire flourished, and islam was founded

c.700 - 1200, during the era when islam was founded and the muslim empire spread

d.1100 - 1600, when the middle ages ended and kings assumed great power in western europe

The answer is letter B.400 - 1400, during the era when the Roman Empire declined, the Byzantine Empire flourished, and Islam was founded

Ghana and Mali flourished at this time because of the sub-Saharan trade. Most of their people were merchants and traders; they would often travel in the Saharan trade. Islam was also founded during this time, thus spread during the trade.

the answer is c     : )

explanation:

i don't have an explanation because i don't know, but i think the answer is c because i googled it and google is right : ) just kidding google isn't allways right but the answer is still c. i hope this !