These three countries alone provide at least half of the world's diamonds. Gold is mined in Ghana, South Africa, and Zimbabwe and are considered to produce half of the world's gold. Most of the petroleum and natural gas comes from Egypt, Nigeria, Algeria, and Libya. Manufacturing is not a major source of revenue in countries throughout Africa. At this point South Africa, Zimbabwe, Senegal, Mauritius and Swaziland are the only countries to be somewhat industrialized.
Economic trade is primarily with Europe, the United States and Japan.
The main exports are petroleum, natural gas, food, tobacco, and raw materials. In the more developed countries and in metropolitan areas, hospitals and doctors are available. In those areas farther away from the cities and in underdeveloped countries, there is a shortage of medical facilities with doctors to treat patients. As a result infant mortality is high in those countries and life expectancy is only 40 years. In the more developed countries such as South Africa, Libya, Algeria, Reunion, and Mauritius the life expectancy is closer to 65 years of age.