Take a look at the economic and cultural development. In the 19th century the area of what Germany is today was then the leading region in Europe. The major cultural achievements came at a time when there was no great central state. The small territories were in intense competition with each other. Everyone wanted to have the best libraries, theaters and universities. This region was significantly more advanced culturally and intellectually than France, which by then was already centralized. All culture in France is focused on Paris, the rest of the country fell into cultural obscurity.
.. Small states have to trade. Their market is not big enough and they are not diversified enough to live independently. If they are not running free trade, they are finished after a week. However, a large country like America can be largely self-sufficient and is therefore less dependent on free exchange with other states. In addition, small and sovereign states cannot permanently dump the blame on others when something goes wrong with them. In the EU, Brussels is often blamed for all sorts of ills. In independent small states governments would, however, have to take responsibility for abuses in their own country. This has a pacifying effect on the relations among nations.´´´
Small states could not afford their own currencies because of the transaction costs. They would therefore strive for a common currency that is independent of and uninfluenced by the individual governments. There is a high probability that they would agree on a commodity money such as gold or silver, whose value is determined in the market. Kleinstaaterei leads to more market and less state intervention in the monetary system.
How .. do Switzerland, Liechtenstein, Monaco and Singapore manage to be economically at the top? My impression is that these countries are wealthier than Germany and that the Germans were wealthy before they embarked on the adventure of the euro. We should free ourselves from the idea that business takes place between states. Business takes place between people and companies that produce here and there. Economies don’t consist of states competing against states but companies against companies. It is not the size of a country that determines its prosperity, but the ability of its citizens.