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
Argentina–Uruguay football rivalry winning teams). The last title won by an Uruguayan club was the 1989 Copa Interamericana, when Nacional beat Hondurean Olimpia 5–1 on aggregate. The table below compares titles won by Argentine and Uruguayan clubs since the first official competition in 1905: Note: AFA / AUF competitions (such as Tie Cup, Copa de Honor Cousenier and Copa Aldao) are not included due to they were contested only by Argentine and Uruguayan clubs. Argentina–Uruguay football rivalry The Argentina-Uruguay football rivalry (also known as Clásico del Río de la Plata or "Clásico del Atlántico" is a highly competitive sports rivalry that exists between