Why is Edward L. Bernays most often credited as being the "father" of modern public relations?

What will be an ideal response?

Answer: In his 1923 book Crystallizing Public Opinion, Bernays coined the phrase public relations counsel and became the first to articulate the two-way communications concept of public relations. That same year, he taught the first public relations course at New York University. Perhaps most critical, Bernays chose not to represent Nazi Germany while his chief rival for the title of father of PR, Ivy Lee, did. Bernays actively promoted himself as the father of public relations. He lived to the age of 103. In doing so, Bernays outlived his contemporaries, many of whom were critical of him.