How about rule of law? Romans invented it and the idea of rule of law rather that just rule by force, lived through Middle Ages and once conditions became right

How about rule of law? Romans invented it and the idea of rule of law rather that just rule by force, lived through Middle Ages and once conditions became right, resulted in explosion of development. There is no economic development without private property, and there is no private property without rule of law because otherwise, you can't own what you don't control, and minority stakes are impossible.