The EU operates according to the principle of subsidiarity, which means that the European Union does not take action (except in the areas which fall within its exclusive jurisdiction) unless it is more effective than action taken at the national, regional, or local level. Exclusive EU jurisdiction: Only the EU may legislate and adopt legally binding acts in fields including the customs union, the common commercial policy, competition rules, and monetary policy for euro countries. Shared EU-Member State jurisdiction: Jurisdiction is shared between the EU and the Member States in specified areas including internal market rules; aspects of social policy; economic, social, and territorial cohesion; agriculture and aspects of fisheries; the environment; consumer protection; transport; trans-European networks; energy; freedom, security, and justice; aspects of public health; aspects of research and technological development and space; and aspects of development cooperation and humanitarian aid. Member State jurisdiction with support from the EU: Although Member States retain jurisdiction in areas related to the protection and improvement of human health; industry; culture; tourism; education, vocational training, youth and sport; civil protection; and administrative cooperation, EU actions can support, coordinate, or supplement Member State activities. The EU also coordinates economic employment policy and a common foreign and security policy, but these areas are managed separately from the framework above.