Why was the “bob” so new? Why was this style not seen much in America before the 1920s?

1. Why was the “bob” so new? Why was this style not seen much in America before the 1920s?

2. Clearly, it was not the hairstyle itself that was the issue – it was what this represented. So what, actually , did it represent?
3. How did this shocking new hair style reflect the changing attitudes and even roles of women in the 1920s?
4. Is there any legacy of this for us today? Do things like hair styles still tell us something about a person, a group or a generation? If you think so , can you give an example?