How do fears of communist expansion in the postwar world alter the U. S. politically and socially?

we need the answer choices to answer the question

they bring people together to achieve control of the government

basically choosinng what sets in   congress and presdicny this is to keepthe antion hole and so it can last because wiht out authority it wouldnt last a week

a king decides to declare war on a neighboring country without the input of any advisers