Regions of Peru density is given to one decimal place in persons per square kilometer. UBIGEO numbers are codes used by INEI to identify national administrative subdivisions. Regions of Peru The regions () of Peru are the first-level administrative subdivisions of Peru. Since its 1821 independence, Peru had been divided into departments () but faced the problem of an increasing centralization of political and economic power in its capital, Lima. After several unsuccessful decentralization attempts, the legal figure of "region" became official and regional governments were elected to manage the departments on November 20, 2002, until their planned fusion into real regions. Under
Constituent Congress of Peru, 1822 already underway to support the Northern Liberator, Simón Bolívar, head of Gran Colombia, who had helped Peru to defeat the Spanish who were left throughout southern Peru, including what is now Bolivia. During the Guayaquil conference, Bolívar, San Martín had offered military aid to Peru, which was founded in July 1822 with the dispatch of Colombian troops under the command of Juan Paz del Castillo. In September of that year, Bolívar returned to offer another 4,000 troops, but the brand new Governing Board accepted the reception of only 4,000 rifles. Relations between Peru and Gran Colombia entered its most critical