Please use this merely as a reference for your assignment, do NOT simply copy/paste this answer! (I have seen dozens of users doing this before and it is NOT a good thing to do, especially for your academic career)
1. The blood diamond trade: Since its roots within the mid-19th-century, the blood diamond trade involves the enslavement of Africans (both youth and elders) to mine diamonds and other rare minerals for use in Europe first, then globally. This trade is about as strong as how controlled the resources are (its why jewelry is so expensive)
2. South Africa: Originally started as numeral European colonies, the place over time has seen heavy diversification namely from both Dutch and British influences. It currently is the most culturally diverse country within the African continent.
3. Language and Culture: Other than the most diverse country of South Africa, there were many other colonies held by European powers, European dialects flooded the land and so did their religion.