How did the african gold-salt trade influence african societies during the postclassical era?

Gold and salt were Africa's most valuable resources. Taxes were enforced on merchants who went on trade routes which made the kingdoms very wealthy. Arab merchants in North Africa introduced the religion of Islam to native Berber-speaking peoples. Berber traders then brought the religion south with them across the Sahara.

Explanation:

b.

jim crow laws were enacted in northern states.