“It would appear that one would live ‘in’ an island when it’s a sovereign nation, but live ‘on’ an island when it’s merely a part of a larger political union.”
Amazing the things that can arise here on FR.
We can live “in” a house,but “on” a boat.
WE ride “in” a car but ride “on” a train.
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We live “in” a house, but live “on” a boat.
We ride “in” a car, but ride “on” a train.
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We park in the driveway; but we drive on the parkway.
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Sending something by car is called a “shipment”;
while sending something by ship is called “cargo”.
:-)
And we're all On planet Earth, which is In space. Ok, time for a coffee ;-)