Your reasoning does not contain flaws, Caleb, though I can point toward locations where you are spinning the truth. But let’s focus on history and take UK history as guidance and discuss Germany later.
The UK currency, the pound, dominated world finance for a real long time. Right at the time true competition sails along, we see the beginning of global wars. The flaw of the British empire (and the French) can be seen as major contributors of WW I and WW II (as they were also the main reasons for the creation of Germany and Italy as nation states). Yes, the US is ultimately the hero after WW II, indirectly helping bring down British and other empires in the world.
But the point is that the UK did not change by itself when others started to keep up with it, and the UK kept the flaw of ultimate leadership in place, no matter the cost. That was a big mistake. The flaw of the leader will be expressed in the outside world, and unchecked it will inflict much damage all around.
The United States is flawed in that it has two truthful colors and a lot of spin. Shown here to the left.
To the right, we see truthful colors only. Notice that green is more prominent than anyone in the system to the left ever could expect. Green is not understood. The nation is blind to it.
As leader, it is exporting this vision. Meanwhile, competition is moving to equal levels.
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What we also learned from world history is that twenty little parties are not the way to move forward for large nations. We fully agree here. Having many parties is fine for small nations.
Germany is the nation in the world with the most experience in political systems. We should take note. They took over the US system after WW II, but they modified it because they realized our system wasn’t a completely fair system.
Germany has had a handful of parties since. They are the example of a very stable nation, their Mark was the super-strong European currency and is the bedrock of the Euro (hence the Euro withstanding many of the US-made financial storms; the Euro is quite successful but we need to be able to read green and not just the red-and-blue stories).
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It should be without discussion that the most stable currency in the world would be the basket of currencies. In the case this is not created by governments, an alternative option exists with Bitcoins (we should be surprised it hasn’t disappeared yet, so we can conclude that it is already playing a stabilizing function on currencies).
I do not need a glass ball to see that the dollar will not remain the strongest currency. It can be twenty years, it can be fifty years. But if the sidestep isn’t made by the leading nation, we’ll be following the UK at the beginning of the 20th century and unnecessary struggles are then in our future.
Next to our success story, we are also exporting our blind spots. They will come back to bite all as soon as others reach the same strength.