 Complete the following phrase:  On 25 May 1810, a Criollo-led cabildo abierto formally assumed the authority from Viceroy Baltasar Hidalgo de Cisneros. However, the ensuing United Provinces of South America formed on the basis of the former Viceroyalty declared itself independent on 9 July 1816, after Ferdid VII was restored in 1815. During the 