Public relations has existed in some form for thousands of years, dating back to ancient civilizations trying to manage public opinion and perceptions of their rulers. While the term "public relations" was coined more recently, the fundamental elements of informing people, persuading people, and integrating people have long been practiced. The document then outlines several key eras in the development of public relations as a field from the 19th century onward, provides definitions of public relations, and discusses ancient and historical examples of public communications and relationship management that can be considered early forms of public relations.