Here's why:
* Patriotic: It expresses love for and pride in Australia, praising its beauty, history, and ideals.
* Anthem: It's the official national song of Australia, sung at important events and occasions, often played at sporting events and ceremonies.
While it's a poem in terms of having verses and a specific structure, it's not classified as a particular poetic form like a sonnet or haiku. Its primary function is to be an anthem, not a literary work.