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Both "reinaba" and "reinó" are forms of "reinar", which is often translated as "to reign". Learn more about "reinar" below.
reinar()
An intransitive verb is one that does not require a direct object (e.g., The man sneezed.).
1. (to govern)
a. to prevail
El bombardeo aéreo finalmente terminó, y reinó el silencio.The air raid finally ended and silence prevailed.
b. to reign
Cuando se disparó la alarma contra incendios, reinó el caos.Chaos reigned when the fire alarm went off.
