The document provides an overview of communication history, forms, and applications in business. It discusses how human communication evolved from subtle exchanges to full conversations with the development of speech around 200,000 years ago and symbols and writing more recently. It then describes various forms of communication including speech, symbols in cave paintings and pictograms, and the development of alphabets and writing. The document also examines topics in business communication such as marketing, branding, and media channels. It outlines methods, types, and purposes of business communication as well as common barriers and roles in organizational settings.