Why are you confidently asserting such things to me under the presumption that y

Why are you confidently asserting such things to me under the presumption that you have but a tiny fraction of my understanding?

No the industrial revolution makes slavery unnecessary.
Yes the technology existed as far back as greece, but certainly in rome. An look at the Antikythera mechanism as well as the early steam engines of the time makes it obvious

The problem was the cheapness of animal labor was an impediment to such investment.

Just to ruin your day, there is nothing in the ethics of christianity that is not in the ethics of the romans other than that the barbarians and slaves, and uneducated women were little different from domesticated animals – and a study of their behavior leaves no doubt. Christianity was a slave revolt seeking to give women primarily slaves and underclass secondly, a means of virtue by doing nothing bad, when virtue in the greco roman aristocratic tradition meant contributing something to the commons.

It’s trade and the expansion of the middle class that makes moral behavior -as we can see round the world. SO you, like say, Weber, attribute to religion what was the result of economics.

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