See Adam Smith, The Wealth of Nations (1776), Vol. 2 p. 112. (Quoted in Richardson, 2004). "Though the Europeans possess many considerable settlements both upon the coast of Africa and in the East Indies, they have not yet established in either of those countries such numerous and thriving colonies as those in the islands and continent of America."
Helen Chapin Metz, ed. Nigeria: A Country Study. Washington: GPO for the Library of Congress, 1991. Retrieved October 11, 2014 from http://countrystudies.us/nigeria/20.htm
