(a)i Commodities of world trade.
(1) Food items e.g. Rice, wheat, etc.
(2) Agricultural raw materials e.g. cotton, rubber, etc.
(3) Mineral, e.g. Tin, columbite, petroleum, etc.
(4) Manufactured goods, e.g. computer, tractor, motor vehicles, etc.
(ii) World sea routes.
(a) North Atlantic sea route
(b) South Atlantic sea route.
(c) Panama sea routes.
(d) Suez canal route.
(e) North pacific sea route.
(f) South pacific sea routes.
(g) Cape route.
(b) Conditions that favour trade among countries.
(1) Differences in climate
(2) surplus of a resource in one region and deficit in another.
(3) Specialization of production in one region and none at other regions.
(4) Demand for products.
(5) Transportation facilities.
(6) Stable social and political conditions.
(7) Agreement between trading partners.
(8) Need to earn foreign exchange.
(9) Colonial ties.
(10) Differences in technological advancements.
(11) Political consideration / interest
(12) Differences in the prices of goods.
(13) Differences in tariffs.
(c) Reasons for low volume of trade among African countries.
(1) Similarity of products.
(2) Similarities of ecological environment.
(3) Low level of technology.
(4) Colonial ties.
(5) Low level of savings.
(6) Transportation facilities.
(7) Differences in currencies.
(8) Existence of regional trade unions.
(9) Poor communication network.
(10) Poor transport links.
(11) Trade barriers / tariffs.
(12) Preference for imported goods.
(13) Political instability.