Ballroom dance may refer, at its widest, to almost any type of social dancing as recreation. However, with the emergence of dancesport in modern times, the term has become narrower in scope. It usually refers to the International Standard and International Latin style dances. These styles were developed in England and are now regulated by the World Dance Council (WDC). In the United States, two additional variations are popular: American Smooth and American Rhythm. There are also a number of historical dances, and local or national dances, which may be danced in ballrooms or salons. Sequence dancing, in pairs or other formations, is still a popular style of ballroom dance.