And the most radically decentralized unit is the individual. From Ryan McMaken at mises.org:
It is not uncommon to encounter political theorists and pundits who insist that political centralization is a boon to economic growth. In both cases, it is claimed the presence of a unifying central regime—whether in Brussels or in Washington, DC, for example—is essential in ensuring the efficient and free flow of goods throughout a large jurisdiction. This, we are told, will greatly accelerate economic growth.
In many ways, the model is the United States, inside of which there are virtually no barriers to trade or migration at all between member states. In the EU, barriers have been falling in recent decades.
The historical evidence, however, suggests that political unity is not actually a catalyst to economic growth or innovation over the long term. In fact, the European experience suggests that the opposite is true.
Why Did Europe Surpass China in Wealth and Growth?
A thousand years ago, a visitor from another planet might have easily overlooked Europe as a poor backwater. Instead, China and the Islamic world may have looked far more likely to be the world leaders in wealth and innovation indefinitely.
Why is it, then, that Europe became the wealthiest and most technologically advanced civilization in the world?
“The smallest minority on earth is the individual. Those who deny individual rights cannot claim to be defenders of minorities.”
― Ayn Rand