The final report of the constitutional convention was approved on september 17 1787 by

The answer is all twelve states in attendance. On September 17, 1787, the Constitution was signed. Members of the Constitutional Convention signed the final report of the Constitution. As stated by Article VII, the document would not turn out to be binding until it was approved by nine of the 13 states.  

the first forms of writing came from them in the form of pictographs around 3100 bc.