This question involved Latin.
Ostendere : Ostensible :: (D) Videre : Introspection
The nineteenth century author who wrote novels that explored themes of the frontier wilderness is James Fenimore Cooper. His works shows the American essentials; that it was timeless just like the wilderness. His depiction of American character is on point and he was considered as the first American who depicted it correctly.
Nunez is a mountaineer who falls down a mountain and ends up in a valley where the "Country of the Blind" is.
Answer: Clementes Impact
Explanation: His impact was to show that his people were as good as any other people
D