In the two previous chapters, I developed a game-theoretical framework to explain changes in the distribution of funds and functions in federal democracies and presented some statistical evidence on the relevance of the main variables. In this chapter, I put forward the comparative historical analysis of the first presidencies after the transition to democracy in Argentina and Brazil. Its main goal is to explain changes in the federal distribution of power in the two cases under analysis by applying the federal distributive game, and by fleshing out, through historical details, the causal explanation put forward in the game-theoretical part of the study.