Which of the following is a reason for the economic growth of the west african kingdom of ghana? (1 point)

it had very large gold reserves backing up its currency.
it was located at a strategic point on the niger river.
it traded in salt and gold with many other groups.
it fought most of its wars with smaller kingdoms.

It traded in salt and gold with many other groups.

Explanation:

The main goods in the trade routes of Ancient Africa were gold and salt. By 1000 B.C.E., the kingdom of Ghana had expanded and become notably wealthy. The land that today is Mauritania, Mali, and Senegal, provided enough gold to make Ghana a leader in the trans-Saharan trade system. Salt, which was sometimes employed as money, was excavated in the Sahara Desert.

the correct answer is history and tradition.