Why did taghanza salt miners rely on trade?

Taghanza salt miners relied on trade primarily because their region was rich in salt but lacked other essential resources, such as food and textiles. By trading salt, which was highly valued for preservation and seasoning, they could acquire these necessary goods from neighboring communities. This interdependence fostered economic relationships and facilitated the exchange of culture and ideas, enhancing the overall sustainability of their livelihoods. Additionally, salt was a vital commodity in trans-Saharan trade routes, increasing its importance in regional commerce.