We study the transmission of business cycle fluctuations for developed (N ) to developing economies (S ) with a two-country, asymmetric, DSGE model with endogenous development of new technologies in N, and sunk costs of exporting and transferring the production of the intermediate goods to S....

We assemble a dataset on technology adoption in 1000 bc, 0 ad, and 1500 AD for the predecessors to today's nation states. Technological differences are surprisingly persistent over long periods of time. Our most interesting, strong, and robust results are for the association of 1500 AD...

We construct a PCE-based price index whose weights minimize the welfare costs of nominal distortions: a cost-of-nominal-distortions index. We compute these weights in a multi-sector New Keynesian model, calibrated to match US data on price stickiness, labor shares, and inflation across sectors....