Economic nationalism became a dominant, and often destructive, discourse in the interwar period. This manifested itself in the rise of economic antisemitism in Nazi Germany, as well as in the corporatist dictatorships ruling Italy, Romania and Brazil. These autocracies were promoted in the writings of Mihail Manoilescu, who believed that dictatorship could spur growth even in autarky. In other ways, however, the interwar period saw a sharpening of existing nineteenth-century trends. Anti-imperialist movements remained powerful, especially in China, where Sun Yat-sen conceived of a powerful protector state that would manage foreign investment. Multi-ethnic contexts, as in Mandatory Palestine, encouraged isolationist approaches, this time from Zionist nation-builders. These efforts at nation-building encouraged economic segregation and ultimately inter-communal conflict. Even Britain, the erstwhile beacon of free trade, attempted to transform its Empire into a self-sufficient trading block during the Great Depression.