What place often traded in exchange for gold?

West African kingdoms, particularly the Mali Empire and the Kingdom of Ghana, were known for trading gold in exchange for various goods. They served as central hubs in the trans-Saharan trade routes, where items like salt, textiles, and food were exchanged for gold. This trade significantly contributed to the wealth and power of these empires during their peak. Gold from this region was highly sought after, making it a valuable commodity in international trade.