Answer:
1. Economical purposes: Before the Industrial Revolution, there was a severe shortage in manpower for many farmers and many alone would not have been able to quickly and efficiently harvest their crops and materials which slavery helped to accomplish as they usually had much more stronger bodys than the farmers and were in large quantities
2. Heirarchy of Race: During the Enlightenment, many thinkers argued that there was a racial hierarchy involved in slavery and that slaves (mostly from Africa) were vastly inferior to the predominant white race that owned most slaves, which justified that those with dark skin, were obligated to be slaves.
3. Religious factors: Many slave owners particularly those in the Southern US had also argued that in the bible, Abraham also was a slave owner which gave them a religious justification that slavery was a needed and acceptable institution.
4. Widespread social anarchy: In addition, Southern slave owners also argued that if slaves were freed this would cause mass unemployment and a societal chaos which used the justification that the slaves would cause social chaos and disorder.
Explanation:
