During which decade did the u. s. pursue a policy of isolationism

The United States adopted a policy of isolationism after the First World War.  They had lost many men during the conflict and did not want to get involve in another war.  They also had to deal with the Depression.  They continued this policy until the outbreak of the Second World War.

if you are on the computer you can not take a picture but you can upload one but i am not sure about phones but i'm pretty sure it's the but to upload one just click the paper clip looking thing/ link thingy thing and upload a pic

answer; one person; monarch;