How did Ghana, Mali, and Songhai get so advanced ?

Answer 1

You'll have to read about each nation, it's natural resources, how they are used, the kind of government they have, etc. Your text materials, no doubt, address this question. You can enter the name of each nation in your web browser and pull up information about each of them, too.

Answer 2

The main export was gold, which made each kingdom wealthy and strong, and provided them with the conditions necessary for cultural and intellectual achievement.

Is this the answer??

Answer 3

No. Your answer is plagiarized and not acceptable.

http://regentsprep.org/regents/global/themes/movement/afr.cfm