3. how was christianity used as a justification for slavery?

Christian views on slavery are varied regionally, historically and spiritually. Slavery in various forms has been a part of the social environment for much of Christianity's history, spanning well over eighteen centuries. In the early years of Christianity, slavery was an established feature of the economy and society in the Roman Empire, and this persisted in different forms and with regional differences well into the Middle Ages.[1] Saint Augustine described slavery as being against God's intention and resulting from sin.[2] In the eighteenth century the abolition movement took shape among Christian people across the globe.