Answer:
The answer is: each unit was run by a viceroy.
Step-by-step explanation:
Viceroy was the title that the Spanish government gave to the governors in its American Colonies. The viceroy had to come from a Spanish familiy and was elected by the king himself. However, the Viceroy did not have power or authority to act in his own name and his powers were limited, he had to act as a representative of his king and in his name. Viceroys were instituted to maintain control of the Colonies, by enforcing laws and promoting the conversion to Christianity.