Taxation and Army

Taxation
The kingdom of Ghana's form of taxation was very advanced for their time. The king taxed people who entered and left Ghana. These and other taxes were paid in salt, iron, fine silk, spices, and other luxury goods. Ghana warriors kept trade routes opened and protected, so that if the traders paid the tax, they were able to pass peacefully. This and other taxes contibuted to the wealth of Ghana greatly.
Army
Ghana's army was much better equipped than their neighboring enemies. Though their vast army was mainly made stronger by their alliances with foreign areas, they were strong and very powerful. Their weapons were tipped with iron, an advancement that made them much more threatening and powerful.