The irregular terrain of Colombia makes the construction of roads and railroads costly. Colombia has 2,137 km (1,328 mi) of operated railroad track. Most of the national railroads are feeder lines to the Magdalena River, the main transport artery of the country, which with the Cauca River is navigable for about 1,500 km (about 900 mi). Colombia has no regular passenger rail service. Roads total 112,988 km (70,207 mi), including a part of the Simón Bolívar Highway, which links Caracas, Venezuela, through Bogotá and other Colombian towns, with Quito, Ecuador.
The national airline, Aerovías Nacionales de Colombia (National Airline of Colombia), known as Avianca, was established as the first Latin American airline in 1919. The main seaports are Buenaventura, Tumaco, Santa Marta, Barranquilla, and Cartagena.
The labor force of Colombia numbers about 22 million. Some 22 percent is engaged in agriculture, forestry, and fishing; 19 percent in industry and mining; and most of the remainder in service industries. In 2007 Colombia had an unemployment rate of 10.9 percent. The main trade unions in Colombia are the Confederación Unitaria de Trabajadores (CUT, Unitary Federation of Workers) and the Confederación de Trabajadores Colombianos (CTC, Confederation of Colombian Workers). The right to strike is constitutionally guaranteed to all employees who are not working for public utilities. "Colombia" © Emmanuel BUCHOT, Encarta, Wikipedia
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