The Tango in the United States: A History - Carlos G. Groppa - Google Books

https://books.google.de/books?id=qr9HDwAAQBAJ

In the earliest years of the 20th century, North American ballroom dancers favored the waltz or the polka. But then a new dance, the tango, broke onto the scene when Vernon and Irene Castle performed it in a Broadway musical. Rudolph Valentino, Arthur…