Governor Alonso de Arce y Soria (1712–1714). Buys the position for 18,000 pesos. Dies five months later. Governor José Bermúdez de Castro (1714–1715). Governor Baltasar García Ros (1715–1717). Colonia del Sacramento returned to the Portuguese. Campaigns against the Charrua, Yaro, and Bohanes. Governor Bruno Mauricio de Zabala (1717–1734). Portuguese removed from Montevideo. Governor Miguel de Salcedo y Sierraalta (1734–1742). Expulsion of foreigners from Buenos Aires ordered. Failed attempt to retake Colonia del Sacramento. Governor Domingo Ortíz de Rozas (1742–1745). Refortified Montevideo. Governor José de Andonaegui (1745–1756). First mail delivery opened with Chile and Potosí. Governor Pedro Antonio de Cevallos (or Ceballos) (1756–1766). Colonia del Sacramento retaken. Governor Francisco de Paula Bucarelli y Ursúa (1766–1770). English expelled from the Falkland Islands. Mail inaugurated between A Coruña and the Río de la Plata. Governor Juan José de Vértiz y Salcedo (1770–1776). After which, the governorate is replaced by the Viceroyalty and Intendancy of Buenos Aires in the Bourbon reforms. See also History of Argentina History of Paraguay History of Uruguay References Rio de la Plata Spanish colonization of the Americas . Former political divisions related to Argentina 1549 establishments in the Viceroyalty of Peru 1776 disestablishments in the Viceroyalty of Peru 1776 disestablishments in the Viceroyalty of the Río de la Plata States and territories established in 1549 States and territories disestablished in 1776 16th century in the Viceroyalty of Peru 17th century in the Viceroyalty of Peru 18th century in the Viceroyalty of Peru 18th century in Argentina