Tortured Tales of Man's Inhumanity to Man

As usual, a question arose in the mind of this inquisitive hoboclown detective.Who or what type of person would fashion a "shackle or chain" to keep and control a captured slave? Did the inventors of such 'inhumane hardware' take pride in the genius of their products ? How much were they paid to fashion such instruments of control and servitude? One question just led to another and another and another. It appeared that different researchers reported similar and differing accounts of the same 'tortured inhumanity of man to man' (woman, child,family,occupation etcetera). No, slavery ( and the hardware thereof) did not originate in the United States against blacks. Yes, slavery ( the institution, culture, practice, and regulation of such in the United States) was borrowed or 'imported from the past allegedly great civilizations of all time'. Yes, the early Romans subscribed to slavery and were said to have valued "Greek" slaves. There were also accounts of early "professional people" of those times taken into slavery by their captives. Review the accounts at the following link for yourself- https://en.wikipedia.org/wiki/Slavery_in_ancient_Rome, Today, the United States (ironically, a country with a tortured legalized history of oppression and slavery) actively prosecutes "human trafficking" to counter "transnational criminal" enterprises .In fact, in " 2010,2011,2012,& 2013,President Obama reportedly proclaimed January as the National Slavery & Human Trafficking Prevention Month". Could today's United States enforcement and prosecution of violations of "human trafficking" laws be applied retroactively to prosecution of the barely remote (in contrast to ancient times) 17th,18th and 19th and 20th century US societal vestiges of 'pro-slavery actions and sentiment' in the individual states of the United States ?