Though fracking is used worldwide to extract gas and oil, a fracking boom has occurred recently in the United States, partly driven by concerns over energy security and the costs associated with imported oil and other fossil fuels.
Early history. The Viennese Waltz, so called to distinguish it from the Waltz and the French Waltz, is the oldest of the current ballroom dances. It emerged in the second half of the 18th century from the German dance and the LÃ¤ndler in Austria and was both popular and subject to criticism.
Samba, ballroom dance of Brazilian origin, popularized in western Europe and the United States in the early 1940s. Characterized by simple forward and backward steps and tilting, rocking body movements, it is danced to music in 4/4 time with syncopated rhythm.