What are the characteristics of dances around the world?

At the beginning of the 20th century, modern dance initiated by Duncan, a famous American dancer, broke the traditional routine of classical ballet with natural dance movements and expressed inner feelings more freely. In addition, there are many unique dances of various regions and nationalities in the world, such as Indian classical dance, Indonesian Balinese dance, Japanese basin dance, Sri Lankan elephant dance, Mexican tap dance, Polish Mazzuca dance, and a large number of rich folk dances in Africa, which make the world dance art colorful.