Figuring out the audience and purpose of your writing can help you determine the angle at which you want to approach your essay/writing. For example, if your task is to write a persuasive essay to a younger audience, it’s vital to know this information so it is understandable to the audience and serve the purpose of the prompt.
There needs to be a question mark after the first sentence.
He needed it to return to the normal why? because, before world war, Harding’s was United States presidential candidate. Harding’s promise was to return the United States’ prewar mentality, without the thought of war tainting the minds of the American people.
I think its the last one but im really not 100% sure. Hope It helped.