DOI: 10.1080/03050620190047607 AN ECONOMIC LIMITATION TO THE ZONE OF DEMOCRATIC PEACE AND COOPERATION

The zone of democratic peace and cooperation is the premier nontrivial fact of inter-national relations. Recent research, however, has shown that the democratic peace is substantially limited to the economically developed democracies (Mousseau, 2000). Is the zone of democratic cooperation also limited to the economically developed democracies? With the observation of most nations from 1919 to 1992, robust sup-port is found for this hypothesis. It appears that economically developed democra-cies are more than eight times more likely than other states to engage each other in an intense form of interstate cooperation: collaboration in militarized conflict. De-mocracies with per capita incomes of less than $8,050, in contrast—77 percent of all joint democratic dyads—appear less likely than other types of states to collabo-rate with each other in militarized conflict. This result is consistent with the view that liberal political culture arises from economic development, and it is liberal po-litical culture that explains the global zone of democracy, peace, prosperity, and interstate cooperation