The kingdom of Ghana lasted from 500 c.e. to 1200 c.e
The ruler of Ghana's government was always the the king.
Camels helped to make travelling the trade route much easier because the animals were well suited for travelling in desert conditions.
Wangara was a huge producer of gold, it was located somewhere near the forest south of Ghana. But To this day no one knows exactly where Wangara is located.
In West Africa, salt was very important because it replaced the salt that people would lode from presperation. People would gather the salt by getting salt water and waiting for the water to dehydrate, or they would mine for the salt because salt deposits could be found 3 feet under the ground.
In Ghana traders would be taxed when they entered Ghana, and when they left Ghana. The takes would enrich Ghana's tresuary and pay for the armies.
Trade caravans would come to trade at Ghana and when they finished there they would head to the southern forest to trade with the Wangarans. Kumbi had the busiest market in West Africa.