Belly dance originated in Egypt, spread in the Arab region, by the cultural influence of the Arab countries
Modern belly dance styles are more popular, Egyptian style, Turkish style, and the American style, the American style can be subdivided into a tribal style. As for the Indian style, I think it compared to other styles have not been fully formed genre, can only be said to have absorbed the Indian dance inside some gestures and so on.
The Indian dance we are talking about now is not pure Indian dance, it can be said to be influenced by many modern dances.
Why do many people now think that belly dance is Indian dance? A big reason is because, the initial promotion of belly dance place is in the gym, the early stage is a lot of fitness dance coach to part-time, for a long time, used to practice, are upbeat music with Indian dance music la ~~~~
As for the style of genre and so on, are all people to see the wisdom of the people, I think that the Indian dance with the big difference between the belly dance, belly dance and India is definitely not usually in the gym!