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| | About South America |
 | | Railroads and coastal and river ships remain relatively more important in Argentina, Brazil, and Chile than elsewhere, but even in these countries the bus, truck, and automobile are the principal modes of transporting goods and passengers. |
 | | Each of these large rivers also provides access to the interior. |
 | | South America contributes significantly to world trade in petroleum, coffee, copper, bauxite, fish meal, and oilseed; trade in these and other primary goods is essential to the underwriting of the continent's economic development. |
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