MANAGEMENT

Detailed explanation-1: -According to Keith, marketing evolved into its present-day prominence within firms during four distinct eras throughout American history. These eras include the production era, the sales era, the marketing era, and the marketing company era.

Detailed explanation-2: -According to the Evolution of Marketing Philip Kotler, marketing has progressed through five stages since the dawn of the Industrial Revolution: the production era, the product era, the selling era, the marketing era and the holistic era.

Detailed explanation-3: -the period following the end of the Second World War which saw the emergence of the marketing concept as the prevailing trend in business.