We investigate the marginal productivity of investment across countries. The aim is to estimate the return on investments financed by foreign aid and by domestic resource mobilization, using aggregate data. Both returns are expected to vary across countries and time. Consequently we develop a...

What is the long run impact on development from differences in subsistence strategies during pre-industrial times? Whereas this question has been explored from the point of view of agriculture, remarkably little attention has been paid to the complementary strategy of relying on marine...