Modern tourism is the "democratization" of leisure pursuits. For example, winter tourism was a sport occupied by a few wealthy people; horse riding, rowing, and shooting were non-popular sports. But the "commercialization" of hobbies and leisure has made this kind of activity accessible to ordinary people. A large number of people go abroad to participate in more exciting and more exotic activities, such as mountain climbing, skating, underwater swimming and carriage travel.popular business list