They used it in trade to increase their wealth and power.
Yes, it did.
Songhai traded gold and salt
Ghana, Mali, and Songhai DID mine gold and salt
No, they used Cowry shells as their currency. But gold, salt and copper was also accepted.
salt, gold, kola nuts, and slaves
Gold, salt, ivory, iron.
salt,gold(of course),animal hides,koala nuts,
The Songhai empire controled the gold and salt trade, which gave them their money and power over West Africa.
in the 1400s it controlled trade and the trade of salt and gold in West Africa
Sahara and valuable salt and gold mines of central Africa
Salt and gold.
The Songhai empire traded mostly salt and gold.