sentences:  This reflects the arrival of the Khoikhoi herders; from this time, hunting and gathering gradually gave way to herding as the dominant economic activity.The arrival of livestock is thought to have introduced concepts of personal wealth and property-ownership as well as the establishment of a political structure of chiefdoms.It was long believed at around the middle of the 1st millennium, the Bantu expansion reached Southern Africa from the Niger River Delta, reaching present-day KwaZulu-Natal Province, but recent archaeological work places the presence of Bantu-speakers in the region as early as the 3rd century CE.The Bantu-speakers not only had domestic animals, but also practiced agriculture, farming millet, sorghum and other crops.