(Third of a series of ten) Most world governments are unitary; all powers are exercised from the center. By definition that means dictatorships, but it also applies to most democracies. Only a few of the world’s modern governments have states, provinces, or cantons with powers of their own which the national / federal government cannot claim. In the United States, the states came first. They, in turn created the federal government. This is not just a theoretical subject, of no real world consequence. To the contrary, the separate powers in the hands of the states are one of the reasons...