Answer :
The best answer is that they were divided into large regions and governed by the Viceroy, so:
a. Large regions run by a viceroy appointed by the king.
Those regions were for example the viceroyalty of New Spain, the Viceroyalty of Peru and the Viceroyalty of Rio de la Plata
a. Large regions run by a viceroy appointed by the king.
Those regions were for example the viceroyalty of New Spain, the Viceroyalty of Peru and the Viceroyalty of Rio de la Plata