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.

wwii

explanation:

the national congress's powers over the states were specific and definite: it had the sole power to negotiate treaties, declare war, and make peace. all powers not granted to congress were reserved for state governments. congress had no power to levy taxes, for example.