What stages has the development of tourism gone through?

From early human production activities to modern global human activities, tourism has experienced three development processes: ancient tourism, modern tourism and modern tourism.

Human migration activities-ancient tourism (a long historical period from the end of primitive society to the beginning of industrial revolution)-modern tourism (from the end of industrial revolution to the end of World War II, 1945, which truly marks the concrete event of modern tourism, is the establishment of the first travel agency in the world-Thomas Cook Travel Agency)-modern tourism (from the end of World War II to the present), especially since the 1960s, socialized mass tourism has spread rapidly. )