Economic Growth develops a new theory of growth. This new theory is based on careful analysis of actual growth; it covers the causes and mechanisms as well as the results of growth. This new theory extends conventional theory by operating at the industry level and by placing demand...

The paper introduces a framework for studying the hierarchy of growth factors, from deep to more immediate. The specific setting we examine is 18th and 19th century Germany, when institutional changes introduced by reforms and transportation improvements converged to create city growth. We...