Abridged from Ragin (1987): The data was used by Rokkan (1970) in his work on nation building in Western Europe. Rokkan used a ''configurational'' approach that bears many similarities to the Boolean approach presented in this work. His main substantive interest was the growth of mass democracy and the emergence of different cleavage structures in Western European polities. One outcome that interested him was the division of some working-class movements in these countries following the Russian Revolution into internationally oriented wings and some into nationally oriented wings. He considered the distribution of this outcome important because of its implication for the future of working-class mobilization (and cleavage structures in general) in Western Europe
data(Rokkan)