Antarctica is selectively mute due to not having any of his own people, but in order to communicate she has learned all forms of sign language in the world so that she can talk to anyone.
Most countries know at least one form of sigh language.
Greenland Helped her learn some of that sign language
So Antarctica taught Greenland most of all those sign languages, they even made up their own sign language just for the two of them.
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headcanon book
Fanfictionplace where all my headcanons go because i need a place to put them you can steal all the headcanons you want
