Rumba (or “ballroom-rumba”), is one of the ballroom dances which occurs in social dance and in international competitions. It is the slowest of the five competitive International Latin dances: the Paso Doble, the Samba, the Cha Cha, and the Jive being the others. This ballroom Rumba was derived from a Cuban rhythm and dance called the Bolero-Son; the international style was derived from studies of dance in Cuba in the pre-revolutionary period which was then popularized by the descendants of African slaves of Cuba. Its tantalizing rhythm first invaded the United Sates in the early 1930s, and has remained one of the most popular social dances. The Rumba is characterized by a smooth, subtle hip motion and a heavy walking step.