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.

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.

Inter-group variation is greater in humans than in any other animal, and scholars continue to debate the cause of this diversity. Two competing explanatory models of human variation emphasize either (1) ecological differences and "evoked" culture or (2) population-level effects of cultural transmission. The former emphasizes mechanisms that operate within a single generation, while the latter emphasizes cumulative cultural history operating over many generations. To test these competing models, the authors measured the relative power of ecological variables as compared to culture history to predict behavioral variation in 172 western North American tribes. Culture history is subdivided into culture phylogeny (based on language phylogeny) and spatial distance.