Geography of South America world by drainage area—the Amazon River and the more southerly Paraná River. The other major river of this central lowland is the Orinoco River, which has a natural channel linking it with the Amazon. Most of this central lowland is sparsely populated because the soils are heavily leached, but in the south is the very fertile pampas of Argentina—one of the world's major food-producing regions where wheat and beef cattle are pre-eminent. The natural vegetation of the northern lowlands are either savanna in the northern "llanos" and southern "campos", or tropical rainforest throughout most of the Amazon basin. Efforts to
Economy of Argentina built in Latin America, the Spanish speaking world and the Southern Hemisphere. No longer the most extensive in South America, its of track carry a million passengers daily. Argentina has around of navigable waterways, and these carry more cargo than do the country's freight railways. This includes an extensive network of canals, though Argentina is blessed with ample natural waterways as well, the most significant among these being the Río de la Plata, Paraná, Uruguay, Río Negro, and Paraguay rivers. The Port of Buenos Aires, inaugurated in 1925, is the nation's largest; it handled 11 million tons of freight and