The 2008 Nobel prize for economics was awarded to Paul Krugman for three papers - Krugman (1979, 1980, 1991). In this paper we illustrate that, indeed, these three papers are closely connected. We present - a summary of - the papers using a unified framework. Central in the discussion is the...

This paper studies the linkage between international trade and income convergence across countries. Different theories offer conflicting predictions regarding how they might affect each other. In the existing empirical literature estimating the trade impact on income convergence, a long-lasting...

The US tariff code stands as a barrier to reviving the US economy as it begins to recover from the coronavirus shutdown. Mounting evidence shows that statutory tariffs and the tariffs imposed by the Trump administration since 2018 are compounding the economic damage caused by the COVID-19 virus...

This paper examines the effect of international trade on corporate market power in emerging market economies and developing countries, with a special focus on sub-Saharan Africa. The analysis is based on a large firm-level dataset, tariff data by sector and aggregate indicators of international...

This paper develops a general equilibrium model of international trade in homogeneous intermediate inputs. In the model, trade between countries is driven exclusively by uncertainty in the delivery of inputs. Because their managers are risk-averse, final good firms contract with multiple...

In the presence of price rigidities, nominal exchange rate fluctuations can have real effects on the economy. External shocks may have differentiated effects across economic sectors depending on firms' marginal cost structure and features of the demand they face, such as strategic...

In a Ricardian two‐factor endowment model with Cobb–Douglas tastes and many goods, this paper describes the interaction of the demand and supply sides to determine the gains and losses from trade. If the abundant factor has a sufficiently rich profile of comparative advantages, trade causes...

In this paper, I quantify the impact of price variability on homogeneous intermediate goods imports. In product-level data, I find a country's share of US imports is decreasing in the level and the variance of its unit price. This finding is consistent with a model of sourcing decisions in which...