Economic history has fared no better than development economics in ultimately becoming a subject-matter for a "rise and fall" literature. Originally, economic history emerged from the confrontations between classical political economy of the Ricardian kind and the Historical School. Before Ricardo, say in Adam Smith's Wealth of Nations, economic history coexisted with pure theory without being aware of its own distinctness. The parting of ways was initiated with the synthesis from history of classical political economy which paved the way for the ultimate emergence of an intermediary field of inquiry. Traditions of economic history differed from one country to another, "but in all the traditional pull of 'institutional' history was strong".