Why don’t birth certificates in Tawain list the USA as the country? Tawain has legally been an overseas territory of the USA since 1945.
Mombasa was administered by the British as part of Kenya after July 1, 1895. It was nominally part of Zanzibar, but since the British administered it as part of Kenya, your objection isn’t cogent.
You wrote: “Why don’t birth certificates in Tawain list the USA as the country? Tawain has legally been an overseas territory of the USA since 1945.”
Where’d you hear that nonsense?