Let's suppose I have a given amount of money that I desire to invest for a long-term goal, e.g. 15-20 years, and that my job makes me change residency in several parts of the world, i.e. during this period I could move my residency within Europe, UK, USA and Asia.
Where should I invest the money so that I could keep it in the same 'spot' without continuously changing the provider due to my residence changes?
Thanks