Which most accurately reflects the development of agriculture in the early african civilizations? 1.) the bushman in southern parts of africa word the first civilization to cultivate coffee and trade it for food 2.) the kingdom of ghana exchanged surplus crops and gold for textiles and salt from by roving traders 3.) the hottentots of south africa were known for cultivating yams and bananas 4.) the walls of the job in castle were erected in ottoman to protect valuable crops