The federal states' (and partly also unitary states' with decentralised administrations) advantages such as additional division of power and the better consideration of regional preferences and fallacies such as the trap of too strong entanglements of all levels of government are well discussed...

Evaluating sustainable development is becoming increasingly important in policy making, evaluation practice and the scientific world in general. However, at present, there is neither a generally accepted set of measures and evaluation methods, nor specific standards to be met. Sustainable...