This document discusses the history and development of the fast food industry from the early 20th century to today. It touches on topics like undocumented immigration, minimum wage, increasing urbanization and how that led to more demand for fast and cheap food options. It also examines how technical innovations like automobiles and drive-thrus helped popularize fast food chains. Finally, it explores how McDonald's became the dominant model that was copied worldwide, having a major global influence on business strategies and culture.