Complex sentence: He went to Hispaniola and later to Cuba, where he received an "encomienda" and, for a short time, became alcalde (magistrate) of the second Spanish town founded on the island.
Split into simpler sentences: He went to Hispaniola and later to Cuba, where he received an "encomienda". For a short time, he served as "alcalde" (magistrate) of the second Spanish town founded on the island.