It was attended by representatives of Gran Colombia (comprising the modern-day nations of Colombia, Ecuador, Panama, and Venezuela), Peru, the United Provinces of Central America (Guatemala, El Salvador, Honduras, Nicaragua, and Costa Rica), and Mexico. Chile and the United Provinces of South America (Argentina) declined to attend, out of mistrust of Bolívar's enormous influence. The Empire of Brazil did not send delegates, because it expected a hostile reception from its Hispanic neighbours due to its ongoing war with Argentina over modern Uruguay.