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.
Early history. 1  Tap originated in the United States through the fusion of several ethnic percussive dances, primarily African tribal dances and Scottish, Irish, and English clog dances, hornpipes, and jigs. 2  In the mid- to late 1800s, dance competitions were a common form of entertainment.