Sub-Saharan Africa West and Central Africa), or sometimes extending from the coast of West Africa to Western Sudan. Its equivalent in Southeast Africa was "Zanj" ("Country of the Blacks"), which was situated in the vicinity of the Great Lakes region. The geographers drew an explicit ethnographic distinction between the Sudan region and its analogue Zanj, from the area to their extreme east on the Red Sea coast in the Horn of Africa. In modern-day Ethiopia and Eritrea was "Al-Habash" or Abyssinia, which was inhabited by the "Habash" or Abyssinians, who were the forebears of the Habesha. In northern Somalia was "Barbara" or
Horn of Africa an estimated total value of between US$250 and US$300 million annually (100 times more than the official figure). This trade helps lower food prices, increase food security, relieve border tensions and promote regional integration. However, there are also risks as the unregulated and undocumented nature of this trade runs risks, such as allow disease to spread more easily across national borders. Furthermore, governments are unhappy with lost tax revenue and foreign exchange revenues. Much of the Horn nations' trade links are with Middle Eastern countries. In 2011, an event hosted by the Arab Center for Research and Policy Studies in