Cinderella,or "The Little Glass Slipper", is a folk tale embodying a myth-element of unjust oppression and triumphant reward. Thousands of variants are known throughout the world. The protagonist is a young woman living in forsaken circumstances that are suddenly changed to remarkable fortune. The story of Rhodopis, recounted by the Greek geographer Strabo sometime between around 7 BC and 23 AD, about a Greek slave girl who marries the king of Egypt, is usually considered to be the earliest known variant of the Cinderella story.