Here's why:
* Single Speaker: The poem is spoken entirely from the perspective of a single character, a rider delivering news.
* Dramatic Situation: The poem unfolds as the rider narrates the urgency and intensity of his journey, creating a dramatic scene.
* Address to an Audience: Although there's no specific "audience" named, the rider is clearly addressing someone – possibly a listener or reader who is curious about his story.
* Revelation of Character: Through the rider's speech, we learn about his personality, determination, and the importance of the news he carries.
While it also exhibits elements of a narrative poem due to its storytelling nature, the dramatic monologue structure is the primary characteristic of "How They Brought the Good News from Ghent to Aix."