The nation states typically had a more centralised and uniform public administration than its imperial predecessors: they were smaller, and the population less diverse. (The internal diversity of the Ottoman Empire, for instance, was very great.) After the 19th-century triumph of the nation state in Europe, regional identity was subordinate to national identity, in regions such as Alsace-Lorraine, Catalonia, Brittany and Corsica. In many cases, the regional administration was also subordinated to central (national) government. This process was partially reversed from the 1970s onward, with the introduction of various forms of regional autonomy, in formerly centralised states such as France.