WORLD HISTORY

Detailed explanation-1: -The Ghana Empire, in particular, grew rich from the trans-Sahara trade. It certainly helped that the empire had control over the three major gold fields to the south of them.

Detailed explanation-2: -The salt mines of Idjil in the Sahara were a famous source of the precious commodity for the Ghana Empire (6-13th century CE) and were still going strong in the 15th century CE.

Detailed explanation-3: -As trade in gold and salt increased, Ghana’s rulers gained power. Eventually, they built up armies equipped with iron weapons that were superior to the weapons of nearby people. Over time, Ghana took control of trade from merchants. Merchants from the north and south then met to exchange goods in Ghana.