The main Countries that Export in Afrcia are Algeria, Libya, Zambia, South Africa. The main exports in these Countries are oil, copper and diamonds. Except the Western World exploit these sort of countries because there vunerable. The fact people work for such little ammounts of money in Africa the Western World can get the products made alot cheaper and yet still sell them for the same price.
Diamonds are a very popular export. However roughly 25% of diamonds are corrupt. Leaders kidnap people and pay them very little to dig for gold. They work for hours apon hours for very little money and if they find a diamond they shout and the leader comes and gets it. If you steal one and get caught they offer you a short sleave or long sleave which means they cut your hand of at your rist for short sleave or at above your elbow for long sleave. The leaders sell the diamonds to dealers and they sell them on and this means it funds the weapons that the rebels have since they are the dealers.
http://youtu.be/XtPX2kXhu7I