the technique of exaggerating political and economic successes
... that 1970s propaganda in the People's Republic of Poland exploited the technique of exaggerating political and economic successes?
... that 1970s <a class="mw-redirect" href="./Propaganda_in_the_People's_Republic_of_Poland" id="mwBdo" rel="mw:WikiLink" title="Propaganda in the People's Republic of Poland">propaganda in the People's Republic of Poland</a> exploited <b id="mwBds"><a href="./Propaganda_of_success" id="mwBdw" rel="mw:WikiLink" title="Propaganda of success">the technique of exaggerating political and economic successes</a></b>?