Final answer:
Haiti is the nation on the western side of the island of Hispaniola.
Step-by-step explanation:
The nation on the western side of the island of Hispaniola is Haiti. The island of Hispaniola is shared by two countries, Haiti and the Dominican Republic. It was originally inhabited by the Taíno people and later became a possession of Spain. Eventually, France and Spain agreed to divide the island into two colonies, with the western side becoming French and the eastern side becoming Spanish.