In this article, we reorient the literature on colonialism and ethnic violence by exploring how different types of communalizing colonial policy (CCP) affected postcolonial patterns of ethnic warfare. We hypothesize that CCPs have limited or mixed effects when they simply recognize or empower communities but that they promote ethnic warfare when explicitly favoring some communities over others, especially when this discrimination affects the power of communities. To test these hypotheses, we combine a statistical analysis of the British Empire with a focused case study of Myanmar. We find that two relatively non-discriminatory CCPs—the use of communal census categories and high levels of indirect rule—had limited or mixed effects on postcolonial ethnic warfare. Unequal communal representation in the legislature and security forces and a mixed use of indirect rule, on the other hand, are three highly discriminatory CCPs, and we provide evidence that they increased the odds of postcolonial ethnic warfare.
