To use people, places, and things to represent general concepts or moral qualities
The story is an allegory for man's struggle with nature.
That depends on the skill of the writer and what he/she is trying to say. Current events are popular, as are war-time scenarios where questions of cowardice, bravery, and performance under pressure can be daily events.
The only novel that I can think of matching this is Animal Farm.
Writers can not choose what to write about or do not know what words to use to describe a dramatic event. Writers often can not think of anything to write about, this is called
Biblical writers use allegory, symbolism, and metaphor to convey deeper meanings in their stories while still presenting them in a realistic narrative. These literary devices help to communicate moral, spiritual, or theological truths that go beyond the surface level of the story.
By thinking about their audience, writers will use more effective appeals.
Writers can think of their own ideas. Use your ideas to write your own stories.
allegory
I think you must mean ALLEGORY, not 'allusions'
Allegory is a noun.
The plural of allegory is allegories.
allegory