Street Dance

It refers to dance style , regardless of country of origin .That evolved outside dance studios in any available open space such as streets , dance parties , parks and nightclubs . They are of improvisational and social in nature . Also like many styles street dance originated from classical ballet, a number of aspects made the style rear away from its original such as cultural and individual ideas and emotions.
Two examples of street dance include Breakdancing and Melbourne Shuffle.
Also there isn't a dancer who is the best of the world because there are a lot of nice dancer, and there are a lot of championships.

                                             https://www.youtube.com/watch?v=8uxDcGprxHU