Why is the sign of the tourism phenomenon 570 people?

There are 3 reasons why the tourism phenomenon is a sign of 570 people.

1. The world-recognized first commercial tourism activity was organized by British Thomas Cook. On July 5, 1841, the British Thomas Cook organized 570 people to attend a temperance meeting from Leicester to Loughborough, which became a symbol of modern tourism activities.

2. In 1845, the British Thomas Cook organized another group recreational tourism activity of 350 people from Leicester to Liverpool. This was the first large-scale and meaningful tourist trip in the world. Organized tourism activities for purely commercial purposes.

3. In 1845, British Thomas Cook founded the world's first commercial travel agency in Leicester. British Thomas Cook was the world's first full-time travel agent.