Answer and Explanation:
This question refers to the allegorical novella "Animal Farm" by George Orwell.
A national anthem is a song that represents a nation and its people, as well as their principles and ideals. In "Animal Farm," the song "Beasts of England" is first taught to the animals as something to inspire them to begin the revolution. It represents the possibility of change. Once the animals take over the farm, "Beasts of England" becomes a type of national anthem for them, representing the ideals and principles that not only led them to rebel but also to build a new society.