Why was the concept of "Propaganda" not popular until after the World War 1?

In politics, propaganda has a very negative connotations. Governments don't want their citizenry to believe they are lying to them.<br><br>...<br><br>Propaganda was popular term in the 17th century, used to describe concept of spreading information about the political and religious ideologies of the Catholic Church. Back then, propaganda did not have a negative connotation.<br><br>If we look at the history of propaganda in 18th and 19th century, we see that it was majorly used for concept of education. The concept was used extensively in political and religion literature. For e.g., 1836 Literature by James Evans titled: Sketch of the denominations of the world: together with an outline of the history of Christianity, and other useful information, in fifty-one numbers, in which 11th concept is dedicated to political and religious propaganda.<br><br>"Political and religious Propaganda in the West India Islands" was another book published in 1836, with concept of religious propaganda.<br><br>Propaganda was used widely in political and religious circles in 18th and 19th century. However, it has an area of negative connotation. For e.g. First chapter of the 1836 Literature by James Evans titled: Sketch of the denominations of the world: together with an outline of the history of Christianity, and other useful information, in fifty-one numbers, has lines like "the baneful increase of Popery".<br><br>There is much less of Propaganda in political and religious texts during the WW1 era. For e.g., the Indian opinion, a Gandhian magazine in this, has concept of propaganda is only used when talking literature or discussing the increase in the number of Christians in India.<br><br>But today, propaganda is extremely popular everywhere. Everyone wants to make their opponents look like they are lying to their citizens, or supporters. It is just a political tool to demonstrate lying nature.<br><br>I don't think that people in the past, were more innocent than today, or did not know that others were lying to them. They even had a more clearer concept of propaganda, than we have today.<br><br>So, what changed after WW1?