Which natural resource was the key to ghana and mali's wealth? gold oil diamonds tungsten

The correct answer is "gold".

Explanation:

Ghana and Mali were two of the most notorious empires of West Africa during pre-colonial times. The wealth of these two empires lied largely on the abundance of the natural resource of gold in these territories. Ghana and Mali profited mostly from the trans-Saharan gold trade, selling their gold to distant merchants through Berbers that utilized camels that carry large loads of the product.

b. she founded a new dynasty that ruled egypt for generations.

well that depends on how deep the hole is. you'd first go through te crust of the earth, then the upper mantle, then the lower mantle then the outer core, then the inner cor then you'd be stuck in the core to melt.