How did propaganda influence Britain in world war 1?

Propaganda was a popular attempt to sway the public opinion in America just before its involvement. German propaganda organizations such as the German Literary Defence Committee distributed over a million pamphlets during 1914 stressing their strength and will. Allied propaganda called on historical ties and exploited German atrocities, both real and alleged. Despite all the attempted influence, the propaganda made little difference to America's public opinion. Ties of heritage, trade and the course of the war, not propaganda, decided the American position.