Laws (and a Constitution) are a necessary but insufficient requirement. A culture (behavior & values) that supports this is also required.
And yet in every culture - in every culture - that these were introduced
and followed there was always a growth in freedom and wealth over time. Even simply introducing democracy (which is not a Republic) and fair elections on a regular basis (and not Chinese elections) powers incredible progress.
Indeed, no country is as free as the United States - but the United States was not, until recently, as free as it is today. In many ways modern America is freer than the Founders' America.
Freedom is arguably also a technology. Just like firearms - that will function whoever aims the gun properly and pulls the trigger - separation of powers and the rule of law work, always - as they are working for the atheist Frenchmen, the Jewish Israelis, and many others.
Israel in particular had never had a 'tradition of liberty' and was not even a democracy in any reasonable sense up until the
Mahapah (ruled by a single party and its officials appointed by a Tammany Hall process). It was populated by descendants of Soviet countries. Up until 1966, a fifth of its citizens
could not vote based on their racial identity. And yet, as soon as elections became competitive, look at all the social and techological process. I rail a lot at ISrael for not being as free as a European first-world state, but in terms of world history it is amazing progress.
It is only when held up against a utopian standard that the United States is a crumbling edifice.