Structural-demographic theory was proposed 30 years ago. Although it was successively refined by other theorists... the theoretical core, and especially the emphasis on intra-elite competition and conflict as the most important driver of socio-political instability and state breakdown, remained constant. Over the past three decades, the theory was empirically tested by a growing number of researchers. Currently, there are detailed investigations of at least twenty crises... to test the predictions of the theory... [T]here are several dozen other less detailed examples. The... verdict is that.. predictions are well supported by data. ...[R]ival theories are not supported.

Peter Turchin Connected to the Carolinas

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