Which of the following best describes the general situation in postwar America?

I don't see anything attached, but if something goes along the lines of, 'After the Second World War, the United States took more strength as the engine of the Western world' or 'The United States in the postwar period became a world military and economic power'.

I would go with those.

Explanation:

naturalization is the process of gaining united states citizenship. becoming an american citizen is the ultimate goal for many immigrants, but very few people are aware that the requirements for naturalization have been over 200 years in the making.