The French Constitution recognises three autonomous jurisdictions. Corsica, a region of France, enjoys a greater degree of autonomy on matters such as tax and education compared to mainland regions. New Caledonia, a "sui generis" collectivity, and French Polynesia, an overseas collectivity, are highly autonomous territories with their own government, legislature, currency and constitution. They do not, however, have legislative powers for policy areas relating to law and order, defense, border control or university education. Other smaller overseas collectivities have a lesser degree of autonomy through local legislatures. The five overseas regions, French Guiana, Guadeloupe, Martinique, Mayotte, and Réunion, are generally governed the same as mainland regions; however, they enjoy some additional powers, including certain legislative powers for devolved areas.