I think there is some connection with the statue in Daniel which ends with the iron legs of Rome, going down to the feet, ten toes and iron mixed with clay. These world empires end when we get to the base of the statue. Also, in Rev. 17 where we begin to read about the destruction of Mystery Babylon, there are 10 kings/kingdoms that destroy Babylon. The "merchants" of the world weep at the destruction of Babylon because they can no longer make profits from her.