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
Geography of Peru Latin American and Caribbean States (CELAC), and the Pacific Alliance. The most populated city in the country is Lima the capital of Peru. Lima a metropolitan area has a population a little over 10 million. The second largest city in Peru Arequipa has a population of 989,919, and Trujillo is a growing city in the northern area of the country holds a population of 935,147. Peru's developed urban cities are found in coastal regions and to the north. There are 32.1 million people who live in Peru. The percentage of urbanization in Peru is 79.2%, and holds a yearly increase