This paper revisits a classical inquiry by addressing the question of localization and urbanization economies. We propose that specialization and diversity may offer externalities operating at different spatial scales. Using high-resolution geo-coded plant-level panel data for Swedish cities...

Nowadays, the urban structure of the metropolitan areas has led to a polynucleated structure, breaking with the paradigm of the monocentric city. The specialized literature has studied this polynucleated structure by identifying the centers that are within of these urban areas. According to this...

Given that India’s urban areas contribute to nearly two-thirds of its gross domestic product, even though they account for only 31% of the country’s population, they have been rightly called the engines of India’s growth. In this paper, I answer the following questions: What are the...

Seaports have historically played a key role in facilitating trade and growth. This paper is the first attempt in the literature to analyse the formation of Chinese seaport cities and the dynamics that drives it. First, we aim to identify theoretically the emergence of urbanized seaports with...

The emergence and growth of cities are shaped by both geographical features and institutional factors. We are able to analyze their interplay at different levels of the urban hierarchy by exploiting a unique data set on cities in imperial China from 221 BCE to 1911 CE, a geographically diverse...

There is a relationship between urban air pollution and economic activity: economic activity generates pollution, for instance through transportation; in turn, pollution spreads around and generates economic disutility. To account for this feedback effect, we propose a spatial model of city...

I document novel stylized facts on learning and its relationship with population density, using Japanese survey data that provide distinctively rich first-hand information about the frequency, purpose, subject, and method of off-the-job learning. First, people learn more frequently in denser...