My question is where a lot of different dances come from. For example Salsa, Cha Cha, and a few others come from Latin America. Is Tango from Spain? Where did Waltz originate from? The Foxtrot was named after an American, right? And a co question. How old are all these dances? Are there some real old dances I do not know of? Did the hustle originate during the disco? How old and where did the Rumba come from? And even a third question? What is the most popular dance in the world? And why is that?