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
San Pedro Department, Paraguay San Pedro Department, Paraguay San Pedro () is a department of Paraguay. The capital is the city of San Pedro de Ycuamandiyú. During the 17th and 18th centuries there was even greater political and population instability than in Concepción. The Mbayá and Payagua native tribes threatened all the area between the Ypané (in the north) and Manduvirá (in the south) Rivers and the valley by the Jejuí River. In 1660 the natives revolted in Arecajá against the postal parcel system, causing the disappearance of this town. To help regenerate this area, the Missions San Estanislao (1749), Villa del Rosario (1786)