No, It is a proper noun, the name for the continent. Placed before another noun, north by itself can be an adjective. Placed by itself after a verb, north by itself would be an adverb.
No
An adverb phrase modifies the verb, in this case telling where. The adverb phrase is "throughout Central America."
We drove north. In this sentence, north is an adverb because it answers the question Where?
No, it is not an adverb. It is a proper noun, the name of a continent.
No, it is not an adverb. The word northern is an adjective (of or pertaining to the north).
South America
The adjective crazy has the adverb form crazily (in a manner apparently crazed or crazy).
It can be either, depending on what it modifies. Just as a direction, It is a noun. Before a noun, it is an adjective, meaning northerly (a north wind, a north course). After a verb, it is an adverb (e.g. we sailed north).
North America
North America
North America
north America
North America