Artigas, who thought that the gauchos were not treated well, supported the new ideas. Buenos Aires deposed the viceroy in 1810, during the May Revolution, who was replaced by the Primera Junta. Mariano Moreno, secretary of war, wrote at the Operations plan that Artigas would be a descisive ally against the royalists in Montevideo, and called him for an interview.
Mariano Moreno
Artigas