it was created to give greater impetus to the process of integration of the european union by providing the possibility of proceeding on and with a smaller number of member were it impossible to reach 
It was created to give greater impetus to the process of integration of the European Union by providing the possibility of proceeding on an issue with a smaller number of Member States where it is impossible to reach a unanimous agreement.
It was created to give greater impetus to the process of integration of the European Union by providing the possibility of proceeding on an with a smaller number of Member where it impossible to reach a unanimous agreement.