The primary purpose of u. s. propaganda was

to dehumanize the japanese and the nazis and to keep war production up.

to encourage free speech

to prevent women and minorities from working

to misinform the public about the war

I think the answer is A, but I'm not 100% certain of it.

when world war i broke out across europe in 1914, president woodrow wilson proclaimed the united states would remain neutral, and many americans supported this policy of nonintervention. however, public opinion about neutrality started to change after the sinking of the british ocean liner lusitania by a german u-boat in 1915; almost 2,000 people perished, including 128 americans. along with news of the zimmerman telegram threatening an alliance between germany and mexico, wilson asked congress for a declaration of war against germany. the u.s. officially entered the conflict on april 6, 1917.