I like that idea. Someone should make a United Kingdom family tree showing how all former territories are the children and grandchildren (and possibly great-grandchildren) of the UK.
Thankfully things have changed since 1914. New Zealand played a pretty shameful part in Samoa's Spanish Flu pandemic. Like other unfortunate parts of New Zealand history, we kind of sweep it under the rug.
Old comment, but I believe his health was bad (probably why he took up writing) and wanted better air and such. Basically, it had good mail service to stay in contact, friendly people (that hasn't changed!), and wasn't overrun by cities and civilization.
It seems that "Date Line" or "Dateline" don't work, only "International Date Line". There is only one Date Line, International or otherwise, so Date Line should be an acceptable alternative.
I still think it was obvious, although I guess Samoa is probably the only country having changed that way during last 100 years. Wondered a bit, why they have done it; my best guess are the Japanese cars...
Would it be unreasonable to accept "rooms" as well as walls? I know it's not exactly the same but if there no walls there's probably not multiple rooms and I missed the question despite having the right idea
https://robert-louis-stevenson.org/samoa-and-vailima/#:~:text=RLS%20chose%20Samoa%20because%20he,under%20pressure%20to%20keep%20writing.