Answer:
Slavery was legal in most societies at some time in the past but is now outlawed in all recognized countries. The last country to officially abolish slavery was Mauritania in 1981. Nevertheless, there are an estimated 40.3 million people worldwide subject to some form of modern slavery. but the civilization that did not allow slavery was: quakers
because the quakers established pensilvania and made slavery illegal
Step-by-step explanation:
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