Ballroom dance has always been fluid, with new dances or folk dances being added to or removed from the ballroom repertoire from time to time, so no list of subcategories or dances is any more than a description of current practices. There are other dances historically accepted as ballroom dances, and are revived via the vintage dance movement. In Europe, Latin Swing dances include Argentine tango, mambo, Lindy Hop, swing boogie (sometimes also known as nostalgic boogie), and disco fox. One example of this is the subcategory of cajun dances that originated in Acadiana, with branches reaching both coasts of the United
Ballroom dance core elements of ballroom dancing such as control and cohesiveness. Developed in England, the two styles are now regulated by the World Dance Council (WDC) and the World DanceSport Federation (WDSF). In the United States, two additional variations are popular: "American Smooth" and "American Rhythm", which combine elements of the Standard and Latin styles with influences from other dance traditions. 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. The term 'ballroom dancing'