Mazurka
The Mazurka is a Polish country dance.  It comes from an area called Mazovia near Warsaw where the people are called Mazurs.  It was known in the 16th century.  In the 17th century its popularity spread all over Poland and by the 19th century it was becoming known in England and then the United States.  The Mazurka is very similar to the Kujawiak which is a dance from another district near Warsaw.