This paper examines the evidence on technology diffusion through trade in differentiated intermediate goods. Because intermediates are invented through costly research and development (R&D) investments, employing imported intermediates implies an implicit sharing of the technology that was...

I study knowledge spillovers, positive externalities that augment the information set of an economic agent, and reviews the evidence on such spillovers in the context of international economic transactions. Even though spillovers are by their very nature difficult to identify, over recent...

This paper describes broad regional and temporal trends in the evolution of international trade and international factor flows between 1700 and 1870, including key differences in trade costs across space and time. We find trade links in Western Europe and the European colonies of North America...