Using geo-coded, firm-level data on more than 51,000 establishments in 649 metropolitan areas in 98 developing economies, from the World Bank's Enterprise Surveys and a new global database on city-level mobility and congestion, this paper estimates the "pure" firm productivity gains of urban...

This paper studies the effect of institutions on trade flows, using a gravity modelapproach. We start from a standard gravity equation that incorporates geographical proximity,language, trade policy and common history. These factors reflect the costs of trade acrossgeographical and cultural...