Fighting over nation or state: States, communal demography, and the type of ethnic civil war.

We recognise nationalist and centre‐seeking ethnic civil wars as distinct types of conflict and draw on key ideas from political sociology to make hypotheses about the causes of each. First, we argue that the character of states shapes antistate actors in ways that channel ethnic conflict in different ways, with pluralist states promoting nationalist warfare but integrative states contributing to centre‐seeking civil war. Second, we propose that the relative power of communities affects the type of ethnic civil war, arguing that centre‐seeking civil war is most common in situations of communal multipolarity whereas nationalist civil war is concentrated in regions with asymmetric power relations. And because historical statehood promotes elements of pluralist states and asymmetric communal power relations, we hypothesise that the risk of nationalist civil war is high in places with large and longstanding states. To test these hypotheses, we use ethnic fractionalisation to measure configurations of communal power and the state antiquity index to measure level of historical statehood, create a variable measuring the extent to which colonial states were pluralist, and run panel analyses of the odds of civil war onset. With one possible exception, the findings support our hypotheses. [ABSTRACT FROM AUTHOR]