The enlightenment succeeded in the physical sciences, but not in the social sciences, and we can see the german, french, russian, jewish, chinese reactions as social counter-enlightenments.
What seems to have been under development in the 1800’s in Germany was the second scientific enlightenment (which benefitted the USA mostly), and the second attempt at social scientific revolution. Poincare, Maxwell, Darwin, Weber/Pareto/Durkheim, Menger, Spencer, Nietzche, Popper(science), Hayek (law) all came very close, and Weber, Mises, Popper, Brouwer, and Bridgman actually independently came to about the same conclusion, but they could not succeed against the pseudoscientific marxists and keynesians, just as the enlightenment philosophers could not succeed against the church and state.
We can succeed. Because we have cognitive science, the record of the failure of keynesian economics, the record of the failure of communism, socialism, social democracy and the record of failure of rousseauian and lockeian man.
The world merely needs the answer that the first scientific enlightenment, the second failed enlightenment (german) and the american post-german attempt failed to produce.
Social science = natural law = reciprocity and the unit of measure = property.