How did the US govt use the mass media to shape popular opinion in WWI?

Question: How did the US govt use the mass media to shape popular opinion in WWI!?
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Check out the posters!. TV wasn't really around then!.Www@QuestionHome@Com

President Wilson ran on a platform of keeping us out of the, "Great War" in Europe!. It was considered their war, not ours!.

After he became president and the sinking of the Lusitania Wilson used his radio addresses to the nation to say that we had a moral obligation to help our allies!.Www@QuestionHome@Com

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Like it has done ever since it outright lies!.Www@QuestionHome@Com