Lord Acton (John Emerich Edward Dalberg-Acton, 1st Baron Acton, 1834–1902) was a leading 19th-century historian in the classical-liberal tradition. He watched the growth of the United States with great interest, and lamented the decline of states' rights and federalism. While he was a prolific writer and speaker, his great work, a history of freedom, was never completed.
Ludwig von Mises: "If one wants to study the reasons for Europes backwardness, it would be necessary to examine the manifold laws and regulations that prevented in Europe the establishment of an equivalent of the American drug store and crippled the evolution of chain stores, department stores, super markets and kindred outfits." - Planning for Freedom