Answer:
1. Substanace farming is when farmers grow crops for themselves and their families. The Bantu people used substsanace farming.
2. Societies formed more slowly in South Africa than in North Africa. West Africa was dominated by large empires that traded for basic needs and they relied on large organized armies for security and control. East African societies were influenced by Islam and participated in trade with the Islamic world.
3. It helped mainly because their kingdom relied on trade, and finding the gold increased their trade with other kingdoms.
4. The sucess of the kingdom Mali came from the trade and exploitation of raw material. The trading was their main source of power and wealth.
5. The key factors that helped the kingdom of Songhai rise to power were the trade routes that were linked to Arabia, North Africa, and West Africa.
6. It affected the culture by spreading their skills in farming and domesticating animals.
7. The Indian Ocean trade affect societies in East Africa was by giving rise to a civilization known as Swahili.
8. The main difference between Southern Africa and North Africa was that North Africa had the advantage when it came to a rich agricultural region.