Does national market size matter for industrial structure? Round One (Krugman) answered in the affirmative: Home market effects matter. Round Two (Davis) refuted this, arguing that an assumption of convenience - transport costs only for the differentiated goods - conveniently obtained the...

Big cities specialize in services rather than manufacturing. Big-city establishments in services are larger than the national average while those in manufacturing are smaller. This paper proposes an explanation of these and other facts. The theory is developed in an economic geography model that...