NBER Publications by Stelios Michalopoulos

We examine the long-run consequences of the scramble for Africa among European powers in the late 19th century and uncover the following empirical regularities. First, using information on the spatial distribution of African ethnicities before colonization, we show that borders were arbitrarily drawn. Apart from the land mass and water area of an ethnicity's historical homeland, no other geographic, ecological, historical, and ethnic-specific traits predict which ethnic groups have been partitioned by the national border. Second, using data on the location of civil conflicts after independence, we show that partitioned ethnic groups have suffered significantly more warfare; moreover, partitioned ethnicities have experienced more prolonged and more devastating civil wars. Third, we identify...

We investigate jointly the importance of contemporary country-level institutional structures and local ethnic-specific pre-colonial institutions in shaping comparative regional development in Africa. We utilize information on the spatial distribution of African ethnicities before colonization and regional variation in contemporary economic performance, as proxied by satellite light density at night. We exploit the fact that political boundaries across the African landscape partitioned ethnic groups in different countries subjecting identical cultures to different country-level institutions. Our regression discontinuity estimates reveal that differences in countrywide institutional arrangements across the border do not explain differences in economic performance within ethnic groups. In con...

This research suggests that a Darwinian evolution of entrepreneurial spirit played a significant role in the process of economic development and the dynamics of inequality within and across societies. The study argues that entrepreneurial spirit evolved non-monotonically in the course of human history. In early stages of development, risk-tolerant, growth promoting traits generated an evolutionary advantage and their increased representation accelerated the pace of technological progress and the process of economic development. In mature stages of development, however, risk-averse traits gained an evolutionary advantage, diminishing the growth potential of advanced economies and contributing to convergence in economic growth across countries.

We model technological and financial innovation as reflecting the decisions of profit maximizing agents and explore the implications for economic growth. We start with a Schumpeterian endogenous growth model where entrepreneurs earn monopoly profits by inventing better goods and financiers arise to screen entrepreneurs. A novel feature of the model is that financiers also engage in the costly, risky, and potentially profitable process of innovation: Financiers can invent more effective processes for screening entrepreneurs. Every existing screening process, however, becomes less effective as technology advances. Consequently, technological innovation and, thus, economic growth stop unless financiers continually innovate. Historical observations and empirical evidence are more consistent wi...