In particular, they need to explain in a clear and simple manner what their respective powers are and what the fundamental criteria are (allocation of powers, subsidiarity and proportionality) for recognising where 'European powers' derive from and how far they extend, as well as the scope of, and consequently the limits of control over, national administrative acts which fall within the Union's sphere of competence.
In particular, they need to explain in a clear and simple manner what their respective powers are and what the fundamental criteria are (allocation of powers, subsidiarity and proportionality) for recognising where 'European powers' derive from and how far they extend, as well as the scope of, and consequently the limits of control over, national administrative acts which fall within the Union's sphere of competence.