After 1917–1923, Europe’s polities varied across democracy and dictatorship. The agrarian east and south passed under dictatorship: Iberia, Hungary, Italy, Poland, Lithuania, Yugoslavia, then Bulgaria, Estonia, Latvia, and Greece. Liberal constitutionalism lasted in France, Britain, the Low Countries, Switzerland, and Scandinavia. In Austria, Germany, and Czechoslovakia democratic republics faced polarized political cultures. Italy was fascist; the USSR socialist. Corporatism – government-brokered convergence of organized interests – shaped constitutional states, above all in Scandinavia, with its strong labor movements. Corporatism in Germany, Austria, and Czechoslovakia was inflected by social democracy, but in societies riven by liberal-conservative enmities and religious, regional or ethno-cultural cleavage. Fascism beckoned as an extreme remedy for chronic parliamentary instability, where leftist defense impeded capitalist stabilization. Nazism and its state mapped onto this topography. Via the Belgian Plan de Man, the French Popular Front, and the Spanish Civil War, the polarizing fallout from rightwing radicalization cast western Europe into crisis.