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
Football in South America held for Central and South American countries to determine participation in the world's largest tournaments. The relatively lesser number of countries in the CONMEBOL region qualify without group play, as this is the system in Central America. Rivalry between any two countries at international match level is most intense between Argentina and Brazil. This duel, which has taken place more than hundred times, has not occurred more than the Argentina vs Uruguay, encounter, but now it is the most intense in South America. This is not owing to past political conflicts, but because these countries are regarded as being the