The author analyzes 440 Sub-Saharan African societies to test whether trade across ecologically diverse zones is predictive of degree of state centralization (state capacity or strength of state) in pre-colonial Africa. The author finds that diverse ecology is predictive of state capacity and that trade supports class stratification. The author also emphasizes the importance of historical contingency and ethnographic data consultation in understanding mechanisms in individual cases.

The author analyzes 440 Sub-Saharan African societies to test whether trade across ecologically diverse zones is predictive of degree of state centralization (state capacity or strength of state) in pre-colonial Africa. The author finds that diverse ecology is predictive of state capacity and that trade supports class stratification. The author also emphasizes the importance of historical contingency and ethnographic data consultation in understanding mechanisms in individual cases.

This article investigates commonly accepted theories that purport to explain political centralization and investigate their relevance to sub-Saharan Africa. The leading ideas for the formation of political centralization using a worldwide sample include population density, inter-state warfare, and trade. However, the authors reported these factors are not predictive of the sub-Saharan Africa sample. The authors suggest that the lack of agricultural productivity in sub-Saharan Africa may have stunted population density therefore inhibiting political centralization and that Africa’s poor economic performance is, in part, due to lack of political centralization.

This article investigates commonly accepted theories that purport to explain political centralization and investigate their relevance to sub-Saharan Africa. The leading ideas for the formation of political centralization using a worldwide sample include population density, inter-state warfare, and trade. However, the authors reported these factors are not predictive of the sub-Saharan Africa sample. The authors suggest that the lack of agricultural productivity in sub-Saharan Africa may have stunted population density therefore inhibiting political centralization and that Africa’s poor economic performance is, in part, due to lack of political centralization.

This article investigates the degree of political centralization in pre-industrial and the political competitive outcomes in 15 modern-day Sub-Sahara African countries. The authors first report that pre-colonial centralization decreases political competitiveness in modern day countries, advocating that traditional power structures play a role in modern day politics. The authors then use light-density as a proxy for regional development and test developmental outcomes based on political centralization and competitiveness. They report pre-colonial centralization positively affected regional development and suggest this could be due to more centralized institutions increasing the capacity of chiefs to mobilize voters, in turn lowering political competition and increasing the accountability of elected officials. Many controls are introduced.

This article investigates the degree of political centralization in pre-industrial and the political competitive outcomes in 15 modern-day Sub-Sahara African countries. The authors first report that pre-colonial centralization decreases political competitiveness in modern day countries, advocating that traditional power structures play a role in modern day politics. The authors then use light-density as a proxy for regional development and test developmental outcomes based on political centralization and competitiveness. They report pre-colonial centralization positively affected regional development and suggest this could be due to more centralized institutions increasing the capacity of chiefs to mobilize voters, in turn lowering political competition and increasing the accountability of elected officials. Many controls are introduced.

This article investigates the degree of political centralization in pre-industrial and the political competitive outcomes in 15 modern-day Sub-Sahara African countries. The authors first report that pre-colonial centralization decreases political competitiveness in modern day countries, advocating that traditional power structures play a role in modern day politics. The authors then use light-density as a proxy for regional development and test developmental outcomes based on political centralization and competitiveness. They report pre-colonial centralization positively affected regional development and suggest this could be due to more centralized institutions increasing the capacity of chiefs to mobilize voters, in turn lowering political competition and increasing the accountability of elected officials. Many controls are introduced.

In this article the researcher conducted five different studies on in-group or "we-group" vs out-group or "they-group" discrimination practices. Two previous hypotheses are re-examined, the pathogen stress hypothesis and the rice-wheat hypothesis, in order to explain heightened ingroup-outgroup differentiation, before turning to overarching geographical hypothesis. Each of the five studies look at a different group of societies cross-culturally, ending in an index of intergroup discrimination by individuals across 222 countries in study 5. All five studies conclude that differentiation between us and them varies based on geographical location and more specifically, along latitude.

In this article the researcher conducted five different studies on in-group or "we-group" vs out-group or "they-group" discrimination practices. Two previous hypotheses are re-examined, the pathogen stress hypothesis and the rice-wheat hypothesis, in order to explain heightened ingroup-outgroup differentiation, before turning to overarching geographical hypothesis. Each of the five studies look at a different group of societies cross-culturally, ending in an index of intergroup discrimination by individuals across 222 countries in study 5. All five studies conclude that differentiation between us and them varies based on geographical location and more specifically, along latitude.

This paper examines the influence of traditional leaders, or "chiefs," in sub-Saharan Africa, and how their power varies within and among 19 African countries. The authors argue that the power of traditional chiefs is influenced not only by state policies of indirect rule, as previous research has suggested, but also by local factors such as land quality. They find that traditional chiefs have more power in areas with higher agricultural potential and land quality, likely because citizens in these areas rely on traditional chiefs to define and defend their land rights beyond the protections provided by state institutions. The authors suggest that while land quality may not have been an important factor in state formation in the pre-colonial period, it has become increasingly important in the past half century as population densities have increased and agriculture has become more intensive. Controls are also introduced.