What I'm asking is two fold: first, what is the biggest pre-requisite for the industrial revolution or anything like it in another TL -- is it a preceding economic and/or commercial revolution? Financial markets? Modern use of science? "Protestant work ethic"? Simple urbanization? (And no just saying "all of the above" or "a combination" -- I'm looking for a leading pre-requisite.)
Second, how soon could this pre-requisite plausibly have happened (any preferred location is fine), and, given that, when is the earliest an industrial revolution could plausibly have happened?