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
Uruguay later 2000s. Most of the country's domestic freight and passenger service is by road rather than rail. The country has several international bus services connecting the capital and frontier localities to neighboring countries. Namely, 17 destinations in Argentina; 12 destinations in Brazil and the capital cities of Chile and Paraguay. The Telecommunications industry, in Uruguay, is more developed than in most other Latin American countries, being the first country in the Americas to achieve complete digital telephony coverage in 1997. The telephone system is completely digitized and has very good coverage over all the country. The system is government owned,