Why west African merchants were willing to pay a high price for salt?

West African merchants were willing to pay a high price for salt due to its essential role in preserving food, particularly in a region where agricultural produce could spoil quickly. Salt was also vital for maintaining health and was used in trade as a valuable commodity. The scarcity of natural salt sources in the region made it a sought-after item, driving up its price in exchange for goods such as gold and other local products. Additionally, the cultural significance of salt in various West African societies further justified its high cost.