The king of ghana controlled the trade of which two commodities

On West Africa's gulf of Guinea is situated the country of Ghana, which is known for differing wild life, old forts and disconnected shorelines, for example, at Busua. Ghana's colonial name was known as the Gold Coast until it acquired its independence in 1957.

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.