If you mean the time right before, when France forced the dissolution of the HRE then I suppose you could come up with a definition of prospering. But whatever

If you mean the time right before, when France forced the dissolution of the HRE then I suppose you could come up with a definition of prospering. But whatever definition you come up with would have been unbearable as “prospering” to any one but the Wittlesbachs. But I suppose that’s all a bit of a derail.