The document discusses the evolution of advertising from the preindustrial era to the present. It describes advertising in the preindustrial period before 1800, the industrializing period from 1800-1900, the industrial period from 1900-1980, and the postindustrial period from 1980 onward. Examples of advertisements are provided from each historical period to illustrate the changes in advertising over time. The effects of advertising on society and ethics are also examined, noting both the potential benefits and dangers of advertising.