Question. 
Serious Question.
When a kingdom "dissolves"  What is the process ?  Do they file papers in some international court ? "Hey, we are done, filing bankruptcy, closing down..."  
Do thy have to file paperwork and merge with another governing entity ? Transfer assets ?  Do they have to notify their population, "Our government does not exist any more, you are now subjects of this other entity or you can join up with anyone else you want."  

Seriously, what is the process to dissolve a kingdom ?
Then, was any of that process ever completed with the "Kingdom" of Hawaii ?
I put Kingdom in quotes because a Kingdom is separate from the physical property it occupies.
There are documented cases right now of nations without those nations having their own physical property. It is called a "Stateless Nation"
https://en.wikipedia.org/wiki/Stateless_nation

This is what the Kingdom of Hawaii has been equated to, and in fact is shown in the list on that page.