We consider a model of the "world" with several regions that may create a unified entity or be partitioned into several unions (countries). The regions have distinct preferences over policies chosen in the country to which they belong and equally share the cost of public policies. It is known...

The Peruvian economy has exhibited remarkable growth in the past 20 years. Good tax and monetary policies, along with comprehensive structural adjustment, which has attracted substantial foreign investment, are regarded as the pillars of this success. Notwithstanding the advances experienced on...