In this information explosion era, people's attention span is dwindling. Whoever catches public attention also catches the business opportunity. However, seizing attention is not something that only happens in contemporary society. The battle for public attention has already begun a century ago. How did merchants benefit from the battle for attention? What changes has the media undergone as a result? How have advertisements evolved over time? How has marketing encroached on every area of our lives? This book will interpret these topics in detail.