==Pamahalaan at pulitika==
The government of Colombia takes place within the framework of a presidential participatory democratic republic as established in the Constitution of 1991. In accordance with the principle of separation of powers, government is divided into three branches: the executive branch, the legislative branch and the judicial branch.
As the head of the executive branch, the President of Colombia serves as both head of state and head of government, followed by the Vice President and the Council of Ministers. The president is elected by popular vote to serve four-year term (In 2015 the Colombia’s Congress approved the repeal of a 2004 constitutional amendment that eliminated the one-term limit for presidents). At the provincial level executive power is vested in department governors, municipal mayors and local administrators for smaller administrative subdivisions, such as corregimientos or comunas. All regional elections are held one year and five months after the presidential election.
The legislative branch of government is represented nationally by the Congress, a bicameral institution comprising a 166-seat Chamber of Representatives and a 102-seat Senate. The Senate is elected nationally and the Chamber of Representatives is elected in electoral districts. Members of both houses are elected to serve four-year terms two months before the president, also by popular vote.
The geography of Colombia is characterized by its six main natural regions that present their own unique characteristics, from the Andes mountain range region shared with Ecuador and Venezuela; the Pacific coastal region shared with Panama and Ecuador; the Caribbean coastal region shared with Venezuela and Panama; the Llanos (plains) shared with Venezuela; the Amazon Rainforest region shared with Venezuela, Brazil, Peru and Ecuador; to the insular area, comprising islands in both the Atlantic and Pacific oceans.
Colombia is bordered to the northwest by Panama; to the east by Venezuela and Brazil; to the south by Ecuador and Peru; it established its maritime boundaries with neighboring countries through seven agreements on the Caribbean Sea and three on the Pacific Ocean. It lies between latitudes 12°N and 4°S, and longitudes 67° and 79°W.
Part of the Ring of Fire, a region of the world subject to earthquakes and volcanic eruptions, Colombia is dominated by the Andes (which contain the majority of the country's urban centres). Beyond the Colombian Massif (in the south-western departments of Cauca and Nariño) these are divided into three branches known as cordilleras (mountain ranges): the Cordillera Occidental, running adjacent to the Pacific coast and including the city of Cali; the Cordillera Central, running between the Cauca and Magdalena River valleys (to the west and east respectively) and including the cities of Medellín, Manizales, Pereira and Armenia; and the Cordillera Oriental, extending north east to the Guajira Peninsula and including Bogotá, Bucaramanga and Cúcuta.
Peaks in the Cordillera Occidental exceed 4,700 m (15,420 ft), and in the Cordillera Central and Cordillera Oriental they reach 5,000 m (16,404 ft). At 2,600 m (8,530 ft), Bogotá is the highest city of its size in the world.
East of the Andes lies the savanna of the Llanos, part of the Orinoco River basin, and, in the far south east, the jungle of the Amazon rainforest. Together these lowlands comprise over half Colombia's territory, but they contain less than 6% of the population. To the north the Caribbean coast, home to 21.9% of the population and the location of the major port cities of Barranquilla and Cartagena, generally consists of low-lying plains, but it also contains the Sierra Nevada de Santa Marta mountain range, which includes the country's tallest peaks (Pico Cristóbal Colón and Pico Simón Bolívar), and the La Guajira Desert. By contrast the narrow and discontinuous Pacific coastal lowlands, backed by the Serranía de Baudó mountains, are sparsely populated and covered in dense vegetation. The principal Pacific port is Buenaventura.
The main rivers of Colombia are Magdalena, Cauca, Guaviare, Atrato, Meta, Putumayo and Caquetá. Colombia has four main drainage systems: the Pacific drain, the Caribbean drain, the Orinoco Basin and the Amazon Basin. The Orinoco and Amazon Rivers mark limits with Colombia to Venezuela and Peru respectively.
Protected areas and the "National Park System" cover an area of about 14,268,224 hectares (142,682.24 km2) and account for 12.77% of the Colombian territory. Compared to neighboring countries, rates of deforestation in Colombia are still relatively low. Colombia is the sixth country in the world by magnitude of total renewable freshwater supply, and still has large reserves of freshwater.