Diversity poses fundamental challenges to state-building and development. We study the effects of one of post-colonial Africa's largest policy experiments -- the Tanzanian Ujamaa policy -- which attempted to address these challenges. Ujamaa aimed to create a national identity and consolidate...

We characterize optimal urban transportation policies in the presence of congestion and environmental externalities and evaluate their welfare and distributional effects. We present a framework of a municipal government that implements different transportation equilibria through its choice of...

With average temperature ranging from -20°C at the North Pole to 30°C at the Equator and with global warming expected to reach 1.4°C to 4.5°C by the year 2100, it is clear that climate change will have vastly different effects across the globe. Given the abundance of land in northern...

In this paper, we show that cross-border portfolio flows around the peak of the European Crisis induced households to rebalance their portfolios toward housing. Estimating difference-in-differences regressions around Draghi's "Whatever It Take" speech in July 2012 with household data from the...

We document a housing portfolio channel of quantitative easing (QE) transmission exploiting variation in German household data in a difference-in-differences setting around QE adoption in 2015. We find that QE encourages households with larger initial bond positions to rebalance more toward...

Economists have long hypothesized that large and thick labor markets facilitate the matching between workers and firms. We use administrative data from the LEHD to compare the job search outcomes of workers originally in large and small markets who lost their jobs due to a firm closure. We...

This article examines the risks faced by China's real estate sector within its distinct hybrid economy, which combines market mechanisms with comprehensive state planning and government intervention. The real estate sector holds particular importance as land sale revenues are a crucial source of...

We examine whether impact investing is more effective in fostering business venture success and social impact when investments are directed toward ventures located in disadvantaged urban areas compared to similar investments directed toward ventures located outside these areas. We explore this...

This paper provides new evidence on the causal impacts of city-wide racial segregation on intergenerational mobility. We use an instrumental variable approach that relies on plausibly exogenous variation in segregation due to the arrangement of railroad tracks in the nineteenth century. Our...

What do recent advances in economic geography teach us about the spatial distribution of economic activity? We show that the equilibrium distribution of economic activity can be determined simply by the intersection of labor supply and demand curves. We discuss how to estimate these curves and...