This title was first published in 2000: The book improves our knowledge on the impact of the territorial organisation of powers on policy-making from a comparative point of view. Case studies of six countries - federal and unitary states - establish the relationship between state structure (federal or unitary) on the one hand and policy formation and performance in regional and environmental policies on the other. It is revealed that we need more a more refined classification of the various forms of territorial division of powers in order to understand variations in policy performance.