Paraguay and Formosa in Argentina. The river is also a source of commerce in the form of fishing, and provides irrigation for agriculture along its route. As such it provides a way of life for a number of poor fishermen who live along its banks and make the majority of their income selling fish in local markets, as well as supplying a major source of sustenance for their families. This has created issues in large cities such as Asunción, where poverty-stricken farmers from the country's interior have populated the river's banks in search of an easier lifestyle. Seasonal flooding of the river's banks sometimes forces many thousands of displaced residents to seek temporary shelter until the waters recede from their homes. The Paraguayan military has been forced to dedicate land on one of its reserves in the capital to emergency housing for these displaced citizens. The river is a tourist attraction for its beauty. History The original inhabitants of the upper Paraguay River were the Guarani peoples. The Paraguay River was explored in the 16th century by Sebastian Cabot, who at that time, became the first recorded European to discover both the Paraná and Paraguay rivers. For hundreds of years, this river has served as the main route of Paraguay to the outside world. Since that time, the river has had its vitality and importance, but is used today for a convoy of barges. Wetland controversy The Paraguay River is the primary waterway of the Pantanal wetlands of southern Brazil, northern Paraguay and parts of Bolivia. The Pantanal is the world's largest tropical wetland and is largely dependent upon waters provided by the Paraguay River. Owing to its importance as a navigable waterway serving Brazil, Argentina, and Paraguay, the river has been the focus of commercial and industrial development. In 1997 the governments of the nations of the La Plata Basin proposed a plan under the Hidrovia Inter-Governmental Commission agency to develop the rivers into an industrial waterway system to help reduce the costs of exporting goods from the area, in particular the soybean crop that the area has embraced. The plan entailed constructing more hydroelectric dams along some of the waterways, along with a massive effort to restructure the navigable waterways—most notably the Paraguay River—through dredging of the waterway, rock removal and channel restructuring. Studies indicated that the proposed river engineering of the Paraguay would have a devastating impact