During the 1980s, then Peru

Peru

Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

vian president Alan García proposed what was supposed to be a radical restructuring of the political and economical divisions of the country: regionalization. The law, which was approved, mandated the creation of region

Region

Region is most commonly found as a term used in terrestrial and astrophysics sciences also an area, notably among the different sub-disciplines of geography, studied by regional geographers. Regions consist of subregions that contain clusters of like areas that are distinctive by their uniformity...

s to function eventually as autonomous economic and administrative entities; 12 regions were formed from 23 of the former 24 departments

Department (subnational entity)

Department is the name given to the administrative and political subdivisions of many countries.As a territorial unit, "department" was first used by the French Revolutionary governments, apparently to emphasize that each territory was simply an administrative sub-division of the united sovereign...

. Formation of another region was delayed by the reluctance of the Constitutional Province of Callao to merge with the Lima Department

Lima Department

Lima Department was a department of Peru. It was formed by the territories of present day Lima Region, Callao Region and Ica Region, and Casma Province, Huarmey Province and Santa Province, which later would be part of the La Costa Department....

. Originally San Martín and La Libertad Regions formed the sole region of San Martín-La Libertad but later were split.

The regions had to assume major responsibilities because of inadequate funding from the central government

Government

Government refers to the legislators, administrators, and arbitrators in the administrative bureaucracy who control a state at a given time, and to the system of government by which they are organized...

, and organizational and political difficulties. This political division was never successful, and its implementation was cancelled.

Region	Departments forming the region
Andrés Avelino Cáceres Region	Huánuco Department (except part of Marañón Province Marañón Province The Marañón Province is one of eleven provinces of the Huánuco Region in Peru. The capital of this province is the city of Huacrachuco. The province has a population of 23,000 inhabitants as of 2002.-Boundaries:...  and Leoncio Prado Province Leoncio Prado Province The Leoncio Prado Province is one of eleven provinces of the Huánuco Region in Peru. The capital of this province is the city of Tingo María.-Boundaries:*North: San Martín Region*East: Ucayali Region... ), Pasco Department and Junín Department Junín Region Junín is a region in the central highlands and westernmost Amazonia of Peru. Its capital is Huancayo.-Geography:The region has a very heterogeneous topography. The western cordillera located near the border with the Lima Region, has snowy and ice covered peaks. On the east, there are high glacier...
Arequipa Region Arequipa Region Arequipa is a region in southwestern Peru. It is bordered by the Ica, Ayacucho, Apurímac and Cusco regions on the north; the Puno Region on the east; the Moquegua Region on the south; and the Pacific Ocean on the west...	Arequipa Department
Chavín Region	Ancash Department (plus part of the Marañón Province Marañón Province The Marañón Province is one of eleven provinces of the Huánuco Region in Peru. The capital of this province is the city of Huacrachuco. The province has a population of 23,000 inhabitants as of 2002.-Boundaries:...  and Leoncio Prado Province Leoncio Prado Province The Leoncio Prado Province is one of eleven provinces of the Huánuco Region in Peru. The capital of this province is the city of Tingo María.-Boundaries:*North: San Martín Region*East: Ucayali Region...  of the Huánuco Department)
Grau Region	Tumbes Department and Piura Department
Inca Region	Cusco Department, Madre de Diós Department and Apurímac Department
La Libertad Region La Libertad Region La Libertad is a region in northwestern Peru. Formerly it was known as the 'Department of La Libertad" , a political division that generally corresponds to a state in the United States of America...	La Libertad Department La Libertad Department La Libertad is one of the departments of El Salvador and is located in the southwest of the country. The capital is Santa Tecla. It has 1,653 km² and a population of more than 780,400 people. It was classified as a department on January 28, 1865. The population was settled on the Ulliman...
Loreto Region Loreto Region Loreto is Peru's northernmost region. Covering almost one-third of Peru's territory, Loreto is by far the nation's largest region and also one of the most sparsely populated ones, due to its remote location in the Amazon Rainforest...	Loreto Department
Los Libertadores-Huari Region	Ica Department, Ayacucho Department and Huancavelica Department
José Carlos Mariátegui Region	Moquegua Department, Tacna Department and Puno Department
Nor-Oriental del Marañón Region	Lambayeque Department, Cajamarca Department and Amazonas Department Amazonas Department Amazonas is a department of Colombia in the south of the country. Its capital is Leticia. Its name comes from the Amazon River that drains much in the department and the rainforest that covers a large part of the department....
San Martín Region San Martín Region San Martín is a region in northern Peru. Most of the region is located in the upper part of the Peruvian Amazon rainforest. Its capital is Moyobamba and the largest city in the region is Tarapoto.-Boundaries:* North and East: Loreto Region...	San Martín Department San Martín Region San Martín is a region in northern Peru. Most of the region is located in the upper part of the Peruvian Amazon rainforest. Its capital is Moyobamba and the largest city in the region is Tarapoto.-Boundaries:* North and East: Loreto Region...
Ucayali Region Ucayali Region Ucayali is an inland region in Peru. Located in the Amazon rainforest, its name is derived from the Ucayali River. The regional capital is the city of Pucallpa.-Boundaries:...	Ucayali Department