This document provides a brief history of public relations from the 1800s to present day. It outlines key early PR campaigns and the development of social media platforms. The summary discusses how PR has adapted to new technologies over time and will continue to evolve as industries face threats from advances like artificial intelligence. While the future of specific tools and tactics is uncertain, the document argues that as long as humans need to promote products and services, the core function of public relations will remain relevant far into the future.