“Marketing Mix.” Please respond to the following: When thinking about the history of public relations, determine which development do you think was the most significant. Explain your reasoning.Of al

“Marketing Mix.” Please respond to the following: 

• When thinking about the history of public relations, determine which development do you think was the most significant. Explain your reasoning.
• Of all the articles you found on the Web site for the World Advertising Research Centre (WARC) at http://www.warc.com/, determine which was the most applicable.  Explain your rationale.
• Explain how can this information help you communicate effectively with these professionals.