The correct answer to this open question is the following.
Unfortunately, you did not mention the ideas you learned in your lesson. That is why we cannot base our answer on that premise.
What we can do is to help to answer the question based on our knowledge of this topic.
The basic steps did the U.S. Government take to return the nation to "normalcy" after the war?
The US government under new President Warren G. Harding had promised during his political campaign that he would turn the United States to normalcy after World War I.
So the things he did was to maintain a foreign policy of neutrality to not interfere in the affairs of Europe or any other region. He made the US federal government stay out of international conflicts in what could be understood as a policy of isolationism.
The US federal government decide not to sign the Versailles Treaty and was not part of the foundation of the League of Nations.
Prohibition was also legislation passed that intended to maintain peace and order in the US society. And all of this helped to welcome the economic period known as the "Roaring 1920s," in which Americans had money to buy many things, mostly on credit: cars, electro domestics, and houses.
