Replication Data for: The Argentina-Brazil Regional Power Transition

Approximately four decades ago, the Southern Cone witnessed a transition from a balance of power between Argentina and Brazil to unipolarity under Brazilian primacy. While structural theories expect such processes to generate conflict, this particular transition was cooperative, leaving an interesting IR puzzle unresolved: Why has Argentina stopped counterbalancing Brazil and opted for accommodation instead? Building on power transition theory, I use process tracing to show that key cooperative turns in this bilateral relationship – during the late 1970s and early 1990s – were possible only after social coalitions were redefined in Argentina. My conclusions suggest that cooperation between Argentina and Brazil was not a product of democracy, as most of the existing literature argues, but a consequence of concurrent structural changes, both at the international and domestic levels