Brazil, officially the Federative Republic of Brazil, is the largest and most populous country in South America, and fifth largest in the world in both area and population. Spanning a vast area between central South America and the Atlantic Ocean, it is the easternmost country of the Americas and it borders Uruguay, Argentina, Paraguay, Bolivia, Peru, Colombia, Venezuela, Guyana, Suriname and the French department of French Guiana. In fact, it borders every South American nation except for Ecuador and Chile. Named after brazilwood, a tree highly valued by early colonists, Brazil is home to both extensive agricultural lands and rain forests. Exploiting vast natural resources and a large labor pool, it is South America's leading economic power and a regional leader. As this country was a former colony of Portugal, Portuguese is its official language.