It is often conjectured that relevant policies are federal, and therefore by definition uniform at the level of the federation; and that, as a consequence, differences at the state level play much less a role. In essence, it is therefore often assumed that the US economy would be significantly more homogeneous than the economy of the euro area.
Looking more closely at the regional dispersion across US regions and euro area economies does not confirm this. In fact, the dispersion of many of the key indicators is surprisingly similar.