Well if your talking about today then the most prevalent is a tie between social media, and the news. But <span>if your talking about like World War l, for example, then posters were prevalent in Britain and Germany because they could target at any audience.</span>
The main reason is that t<span>he Union had strong leadership in the West.
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I<span>ncreased globalization especially after the fall of communism and end of a cold war, all other three was quite opposite.</span>
