Here's why:
* Proper adjective: A proper adjective is derived from a proper noun (a specific person, place, or thing) and is used to describe something associated with that noun.
* Proper noun: New Zealand is a proper noun, referring to a specific country.
* Geographic: The proper adjective "New Zealand" is used to describe something related to the country of New Zealand, like "New Zealand wine" or "New Zealand landscape."
Therefore, "New Zealand" is a geographic proper adjective.