An interesting fact is that some of the most important figures of Argentinean independence made a proposal known as the Inca plan of 1816, it proposed that United Provinces of the Río de la Plata (Present Argentina) should be a monarchy, led by a descendant of the Inca. Juan Bautista Túpac Amaru (half-brother of Túpac Amaru II) was proposed as monarch. Some examples of those who supported this proposal were Manuel Belgrano, José de San Martín and Martín Miguel de Güemes. The Congress of Tucumán finally decided to reject the Inca's plan, creating instead a republican, centralist state.