Originally Posted by DuckieTigger
I guess it is not possible, see my screenshot of Manage Kindle page when I log in to Amazon.de (says that my account is registered to amazon.com, and I need to visit them)
I don't see switching or anything.
What if you go to your US account? In country settings for your Kindle, you should find "change" and "further information". The "further information" I only find in my "home account" Germany. In the US account, I only can switch.
Under "further information" it shows the choice from my first post. Obviously, there's some kind of "lead account". Might be the one where your "1-click settings" link to. Might be the one you opened first. Might be the one with the same country as your credit card/billing address.
Very interesting anyway. Amazon seems to be way ahead of most competitors re. getting (or being already) global.