Independence of Paraguay Plata with a capital city in Buenos Aires. It included parts of modern-day Argentina, Bolivia, Uruguay and Rio Grande do Sul. In 1782 a system of municipalities was introduced. The municipality of Paraguay had only one town with city status – Asuncion. During the era of the Napoleonic Peninsula War, when mainland Spain was allied with and later occupied by the French, The British Empire attempted to take control of the Viceroyalty by launching the River Plate invasions, occupying Buenos Aires and neighbouring parts of the Río de la Plata in 1806 and 1807. Paraguayan units led by Governor Velasco
Geography of Paraguay Paraná; the mountain chain has an average height of . Separated from the Eastern region by the Paraguay River, the Chaco region is a vast plain with elevations reaching no higher than and averaging . Covering more than 60 percent of Paraguay's total land area, the Chaco plain slopes gently eastward to the Río Paraguay. The Paraguayan Chaco is subdivided into two parts. The "Alto Chaco" (Upper Chaco), also called "Chaco Seco" (Dry Chaco) is the western three-quarters of the region, bordering on Bolivia, while the "Bajo Chaco" (Lower Chaco) or "Chaco Húmedo" (Humid Chaco) borders on the Paraguay River.