Latin America tunnels tenders

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A tunnel is an underground passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods. A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. The central portions of a rapid transit network are usually in the tunnel. Some tunnels are used as sewers or aqueducts to supply water for consumption or for hydroelectric stations. Utility tunnels are used for routing steam, chilled water, electrical power or telecommunication cables, as well as connecting buildings for convenient passage of people and equipment.

Latin America is the portion of the Americas comprising countries and regions where Romance languages—languages that derived from Latin—such as Spanish, Portuguese, and French are predominantly spoken. The term was originally used to refer to places in the Americas that were ruled under the Spanish, Portuguese, and French empires. Latin America consists of 20 countries and 14 dependent territories that cover an area that stretches from Mexico to Tierra del Fuego and includes much of the Caribbean. It has an area of approximately 19,197,000 km2 (7,412,000 sq mi), almost 13% of the Earth's land surface area. As of March 2, 2020, the population of Latin America and the Caribbean was estimated at more than 652 million, and in 2019, Latin America had a combined nominal GDP of US$5,188,250 million and a GDP PPP of US$10,284,588 million. Countries in Latin America - Argentina, Bolivia, Brazil, Chile, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, the Dominican Republic, Uruguay.