Why and how PR became a profession over the years?

Public Relation is the organized work to influence the public effectively. This public relation does not have formal education system, it is mostly based on skill and efficiency to attract the public to sell a product or service. Not much people are required to do this job. It is simple and so mostly organizations will have only one Public Relation practitioner. The reason that this grew to greater extent as years go by is because of over population and that more number of people work in an organization, so the departments divide further and further, which sometimes make work heavy for workers too. In this case a mediator is very much required to know the Public opinion and these mediators directly have communication and contact with the customers about their product or service. Without a public relation practitioner it is quite impossible to know, whether the production of a company is at any cause useful to the people. So over the years it has become one important post in any organization and there are many courses offered by various universities to study Public Relation. It is also improved much more in this present years due to the advancement in technology that help to reach people much more easily than earlier. The social networking sites like facebook, twitter and tumbler, etc. makes the job easier.