Birth of marketing ideas[edit]
In pre-modern economies, the predominance of small enterprises militated against the recognition of marketing as a separate field of expertise. Changes in the patterns and intensity of economic activity, as well as the rise of economics as a science, particularly in the 19th century, paved the way for studies of marketing. The growth in size and scope of national and international economies in the course of the Industrial revolution led eventually to a transcendence of ad hoc retailing and advertising innovations and eventually to systematization. Marketing emerged as a separate technical field only in the late 19th century. The OED traces the abstract usage of the word only as far back as 1884.