Binghamton University professor Andrew Walkling believes British kings will soon no longer rule foreign countries.
Australia and some Caribbean countries want to abolish the monarchy.
Prince Charles attended Barbados' independence and Dame Sandra Mason's inauguration.
The colonial past must be left behind, and having Charles III as King of Papua New Guinea is an odd idea.
Canadians, Australians, Jamaicans, and others have less pride and confidence in the British monarch.