functions in conjunction with the dependence of price on distance, and consider whether spatial interaction theory can provide … this explanation is not unequivocal. On the other hand we show that incorporating spatial interaction theory elements in a …

We present a multi-country theory of economic growth in which countries are connected by a network of mutual knowledge … country depends on its connections to the rest of the world and on the human capital of the countries it is exchanging … knowledge with. We show how the diffusion of knowledge through the world explains the evolution of global income inequality. It …