In 1932, the United States confronted a bleak economic landscape. Amid the financial carnage caused by the 1929 stock market crash and the ensuing Great Depression, economic activity had ground to a halt, tax revenues had plunged, and the nation's debt had soared. The declining government...

We show that regional heterogeneity of underlying fundamentals (e.g. economic history, geography, social capital) can lead to extreme voting in federations. When the outcome of federal policies – such as transfer schemes, market regulation or migration laws – depends on these fundamentals,...