" (Thornton, 1992) To ensure the security and protect themselves against outsiders -especially opposing tribes- , the clans needed to gain dominance in military technology which they obtained by slave trade. The cycle was simple. Africans themselves captured Africans as slaves while fighting each other in return to get military technology. The more slaves they captured meant the more horses and guns they possess and the more military dominance resulted in more successful wars guaranteed large supplies of slaves. "Through the operation of their control over the means of destruction, Europeans were able to influence Africans indirectly. They could direct commerce in ways that helped them also compel Africans to wage wars that might otherwise not have been waged. This would cause Africans to seek more slaves than they needed for their own political and economic ends and depopulate the country against their wishes." (Thornton, 1992) That vicious additionally destructive cycle put Africans under control of Europeans. Africa remained helpless and weak. After a while, it had no potential to resist superior outsiders to cease the slave trafficking.
To move onto another important argument, Native Americans were inappropriate by means of demographic and physical attributes to labor as slaves. Initially, Indians got accustomed to live in thinly settled, low density populations in which one can handily survive on lighter labor compared to any other place in the world. Thus, the concept of working for a land owner or an overseer or an administration did stand for nothing in their society. They were definitely far sensitive about freedom and loss of liberty. .
Moreover, Peter Rietbergen, a historian in Catholic University of Nijmegen, asserts many Europeans" reports show "they (Europeans) thought that after centuries of searching the Earthy Paradise had at last been discovered: the place where people still lived as God had created them, not spoilt by the Fall.