After the May Revolution in Buenos Aires, capital of the Viceroyalty of the Río de la Plata, the Primera Junta government invited the other cities and provinces to join the revolution. Any intent of preserving the local governments previous to the revolution were considered hostile; and as a consequence two military campaigns were launched to suppress the resistance, one to Upper Peru and another to Paraguay, whose Spanish governor, Bernardo de Velasco, had refused to recognize the Junta and had received political support from the Cabildo of Asunción.