How did the united states demonstrate its isolationist policy before world war ii?

i don't see how you want other people to do your work for you and it is like you are just handing your assignment to anybody else and having them deal with it instead of your self i thought this site was for asking questions and somebody could you on it not just handing your work to somebody else to deal with it just saying don't mean to be mean just proving a fact.

explanation:

i belive the continental association was created to boycott all contact with british goods.

i also belive it was in december 1, 1774