Nomads herding animals in the fringes of the desert, the Sahel, posed a threat to the early Soninke who lived south of the Sahara as agriculturalists. During times of drought, the nomads would raid the villages to the south in search of water and pastures for their herds. To protect themselves from these raids, the communities of African farmers joined forces, possibly to form a loose federation of states that eventually became the kingdom of Ghana.
During the third century A.D., it is probable that a Soninke chief succeeded in uniting the Soninke people (the northernmost Mande peoples) and possibly founded the city of Kumbi Saleh (in present-day western Mali). Kumbi Saleh was an oasis along an important north-south trade route. This chief belonged to the royal clan of Ouagadou, and the Soninke first named their kingdom after this royal family. He was known as the Kaya maghan, "king of the gold," and as Ghana, or "war chief." Over time, the land of the Ouagadou (Wagadu) became known (by the Arabs) as Ghana; they also associated it with gold. Rulers of the state kept extending their borders in order to gain control of the trade routes by conquering neighboring territories. By the fifth century, the Soninke kingdom of Ghana had been established. This kingdom lasted about six centuries before being conquered by new forces from the east.
Source:A.R.K Bawku
Source:A.R.K Bawku