Explanation:

The development of marketing was first characterized by a production period that occurred between the 1890s and 1920s. 
The study of the history of marketing, as a discipline, is meaningful because it helps to define the baselines upon which change can be recognised and understand how the discipline evolves in response to those changes.

The practice of marketing has been known for millennia, but the term "marketing" used to describe commercial activities buying and selling a products or services came into popular use in the late nineteenth century.  The study of the history of marketing as an academic field emerged in the early twentieth century.