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We use 4-digit data to document the role of world shocks for intensive and extensive margin of exports. We estimate a VAR model, where the endogenous bloc comprises bilateral export margins and relative GDP, and the exogenous bloc comprises disaggregated measures of world price shocks. We find that world shocks have a significant impact on both the average export volume and export diversification. Impulse responses display considerable heterogeneity depending on the shock considered, the exchange rate regime and the great trade collapse. The evidence in the paper has remarkable consequences for trade and exchange rate policies.