call me cynical, but would any country be willing to give up its land like that? Tribal lands only exist to give back a small fraction of stolen lands back. Would any country give land to another country just for goodwill?
Tribal lands exist largely so that those resistant to integration will stay out of the way of colonizers.
Fiji gets a share of Tuvaluan fishing grounds, and the Tuvaluans get a place to live AND some protection for their territorial waters by a nation that is still landed.
By the way, what do you mean by "orbital rights"? IMHO according to the Outer Space Treaty you have only the right to the orbits you are currently actively using with your satellites and nothing more.
Galicia: the local king.
Calling the Britons "British" and Anglo-Saxons "English" is confusing... Usually those terms are used for modern Great Britain and modern English.