Europeans were anxious to acquire gold in Africa because there was a pressing need for gold coin within the growing capitalist money economy. - Walter Rodney

The trade in human beings from Africa was a response to externa factors. At first, the labor was needed in Portugal, Spain, and in Atlantic islands such as , , and the Canaries; then came the period when the and the Spanish-American mainland needed replacements for the Indians who were victims of genocide; and then the demands of Caribbean and mainland plantation societies had to be met. The records show direct connections between levels of exports from Africa and European demand for slave labor in some part of the American . When the Dutch took in Brazil in 1634, the director of the Dutch West Indian Company immediately informed their agents on the Gold Coast that they were to take the necessary steps to pursue the trade in slaves on the adjacent coast east of the Volta—thus creating for that area the infamous name of the “Slave Coast.” When the British West Indian islands took to growing sugar cane, Gambia was one of the first places to respond. Examples of this kind of external control can be cited right up to the end of the trade, and this embraces also, since European markets in the islands became important in the eighteenth and nineteenth centuries, and since demand in places like Brazil caused Mozambicans to be shipped around the .

One of the common means by which one nation exploits another and one that is relevant to Africa’s external relations is exploitation through trade. When the terms of trade are set by one country in a manner entirely advantageous to itself, then the trade is usually detrimental to the trading partner. To be specific, one can take the export of agricultural produce from Africa and the import of manufactured goods into Africa from Europe, North America, and Japan. The big nations establish the price of the agricultural products and subject these prices to frequent reductions. At the same time the price of manufactured goods is also set by them, along with the s necessary for trade in the ships of those nations. The minerals of Africa also fall into the same category as agricultural produce as far as pricing is concerned. The whole import-export relationship between Africa and its trading partners is one of unequal exchange and of exploitation.

The Portuguese and Belgian colonial regimes were the most brazen in directly rounding up Africans to go and work for private capitalists under conditions equivalent to slavery. In Congo, brutal and extensive forced labor started under King Leopold II in the last century. So many Congolese were killed and maimed by Leopold’s officials and police that this earned European disapproval even in the midst of the general pattern of colonial outrages. When Leopold handed over the “Congo Free State” to the Belgian government in 1908, he had already made a huge fortune; and the Belgian government hardly relaxed the intensity of exploitation in Congo.