Gran Colombia–Peru War was the kernel of Bolívar's grander scheme to unite the former Spanish colonies in Central and South America. Prior to becoming the titular head of Gran Colombia, Bolívar had been, briefly, the president of the newly independent state of Bolivia, his namesake. Bolivia had formerly been a part of the Viceroyalty of the "Rio de La Plata", known as Upper Peru, and, once Bolívar relinquished the presidency of Bolivia to his revolutionary compatriot, Antonio José de Sucre Alcalá, in 1826, the Peruvians saw an opportunity. Early in 1828, Peru launched a campaign against Bolivia to reclaim its former territory and
Provinces of Peru Provinces of Peru The provinces of Peru () are the second-level administrative subdivisions of the country. They are divided into districts (). There are 196 provinces in Peru, grouped into 25 regions except for the Lima Province which does not belong to any region. This makes an average of seven provinces per region. The region with the fewest provinces is Callao (one) and the region with the most is Ancash (twenty). While provinces in the sparsely populated Amazon rain forest of eastern Peru tend to be larger, there is a large concentration of them in the north-central area of the